Borys Chaława

W–L: 0–1
Gi: -
No-Gi: 1,145
Current form: 0–1
Opponents: 1

Indexed career

Matches

Indexed competition matches
Date	Opponent	Result	Event	Division
2025-09-06	Sviatoslav Malafii	Loss	ADCC European, Middle East & African Championship 2025	No-Gi · Boys 13-14 years / Beginner / -55 kg
Opponent rating 1,470 Expected win chance 28% Current estimated model contribution Rating influence The stronger opponent reduces the negative influence. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. The evidence weight is lower because this athlete had 4 rated matches at this event. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ −26 The stronger opponent reduces the negative influence. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. The evidence weight is lower because this athlete had 4 rated matches at this event. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Opponent rating 1,470 Effective opponent evidence 11.4 Opponent rating status Established Expected win chance 28% Result Loss Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Evidence weight 0.71 Same-event matches 4 Meetings with this opponent 1 Duration 02:23 Round 1 Score 0–0 Academy during event Checkmat Poznań
2025-05-17	Sviatoslav Malafii	Loss	ADCC Amateur World Championship 2025	No-Gi · Boys 13-14 years / Boys 13-14 years / -55 kg
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Loss Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Duration 05:00 Round 2 Score 2–3 Academy during event Checkmat Poznań Outside the current rating period
2024-08-31	Nikita Skalevskyi	Win	NAGA Amsterdam Grappling Championship	No-Gi · Children No-Gi (Male) / Expert / 45 - 49.9 / 12-13 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Duration 04:00 Round 1 Score 8–4 Academy during event Checkmat Poznań Outside the current rating period
2024-08-31	Nikita Skalevskyi	Win	NAGA Amsterdam Grappling Championship	Gi · Children Gi (Male) / Expert / 45 - 49.9 / 12-13 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format Gi Duration 04:00 Round 2 Score 10–4 Academy during event Checkmat Poznań Outside the current rating period
2024-08-31	Priscilla Cardano Crippa	Win	NAGA Amsterdam Grappling Championship	Gi · Children Gi (Male) / Expert / 45 - 49.9 / 12-13 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format Gi Duration 00:31 Round 1 Score 2–0 Academy during event Checkmat Poznań Outside the current rating period
2024-05-25	Franciszek Kowalski	Win	ADCC Amateur World Championship 2024	No-Gi · Boys 11-12 years / Beginner / -45 kg
Current estimated model contribution Rating influence — Duration 01:23 Round 4 Score 0–0 Academy during event Checkmat Poznań Outside the current rating period
2024-05-25	Piotr Kopacz	Win	ADCC Amateur World Championship 2024	No-Gi · Boys 11-12 years / Beginner / -45 kg
Current estimated model contribution Rating influence — Duration 01:03 Round 3 Score 0–0 Academy during event Checkmat Poznań Outside the current rating period
2024-05-25	Mirosław Zając	Win	ADCC Amateur World Championship 2024	No-Gi · Boys 11-12 years / Beginner / -45 kg
Current estimated model contribution Rating influence — Duration 00:56 Round 2 Score 0–0 Academy during event Checkmat Poznań Outside the current rating period
2023-05-27	Danila Ruslan Bergheim	Loss	NAGA Germany Grappling Championship	Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Loss Format Gi Duration 01:58 Round 1 Score 0–0 Academy during event Zenith bjj Outside the current rating period
2023-05-27	Temirlan Valiyev	Loss	NAGA Germany Grappling Championship	No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Loss Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Duration 03:21 Round 3 Score 3–8 Academy during event Zenith bjj Outside the current rating period
2023-05-27	Rafael Derache	Win	NAGA Germany Grappling Championship	No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Duration 04:00 Round 2 Score 2–1 Academy during event Zenith bjj Outside the current rating period
2022-09-03	Temirlan Valiyev	Loss	NAGA Luxembourg Grappling Championship	Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Loss Format Gi Duration 01:53 Round 3 Score 2–0 Academy during event Zenith bjj Outside the current rating period
2022-09-03	Ulysses Sanner	Win	NAGA Luxembourg Grappling Championship	Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format Gi Duration 02:48 Round 2 Score 0–0 Academy during event Zenith bjj Outside the current rating period
2022-09-03	Myriam DYA	Win	NAGA Luxembourg Grappling Championship	Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format Gi Duration 00:11 Round 1 Score 0–0 Academy during event Zenith bjj Outside the current rating period
2022-09-03	Blaize Tingle	Loss	NAGA Luxembourg Grappling Championship	No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Because this No-Gi rating is still provisional, individual matches can have relatively more influence. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Loss Format No-Gi Athlete’s No-Gi rating 1 rated match · Provisional Duration 01:53 Round 1 Score 1–1 Academy during event Zenith bjj Outside the current rating period
2020-09-05	Ratmir Treiden	Win	KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL	youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format youth_ratings.formats.conflict Duration 00:46 Round 3 Score 7–0 Academy during event Zenith bjj Outside the current rating period
2020-09-05	Unknown User	Win	KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL	youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format youth_ratings.formats.conflict Duration 03:00 Round 2 Score 15–0 Academy during event Zenith bjj Outside the current rating period
2020-09-05	Michal Janele	Win	KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL	youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)
Current estimated model contribution Rating influence This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Current rating influence ≈ 0 This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Calculation details This number estimates how much the published Overall rating would differ if this match were omitted. It is not a points transaction and cannot be added to other matches. Later results can change this estimate when the model learns more about either athlete. Result Win Format youth_ratings.formats.conflict Duration 00:56 Round 1 Score 2–0 Academy during event Zenith bjj Outside the current rating period

Loss 2025-09-06

against Sviatoslav Malafii

ADCC European, Middle East & African Championship 2025

No-Gi · Boys 13-14 years / Beginner / -55 kg

Sub (02:23 · 0–0)

Match details

Opponent rating

1,470

Expected win chance

28%

Current estimated model contribution

Duration

02:23

Round

Score

0–0

Academy during event

Checkmat Poznań

Loss 2025-05-17

against Sviatoslav Malafii

ADCC Amateur World Championship 2025

No-Gi · Boys 13-14 years / Boys 13-14 years / -55 kg

Pts (2–3)

Match details

Current estimated model contribution

Duration

05:00

Round

Score

2–3

Academy during event

Checkmat Poznań

Outside the current rating period

Win 2024-08-31

against Nikita Skalevskyi

NAGA Amsterdam Grappling Championship

No-Gi · Children No-Gi (Male) / Expert / 45 - 49.9 / 12-13 years

Pts (8–4)

Match details

Current estimated model contribution

Duration

04:00

Round

Score

8–4

Academy during event

Checkmat Poznań

Outside the current rating period

Win 2024-08-31

against Nikita Skalevskyi

NAGA Amsterdam Grappling Championship

Gi · Children Gi (Male) / Expert / 45 - 49.9 / 12-13 years

Pts (10–4)

Match details

Current estimated model contribution

Duration

04:00

Round

Score

10–4

Academy during event

Checkmat Poznań

Outside the current rating period

Win 2024-08-31

against Priscilla Cardano Crippa

NAGA Amsterdam Grappling Championship

Gi · Children Gi (Male) / Expert / 45 - 49.9 / 12-13 years

Sub (00:31 · 2–0)

Match details

Current estimated model contribution

Duration

00:31

Round

Score

2–0

Academy during event

Checkmat Poznań

Outside the current rating period

Win 2024-05-25

against Franciszek Kowalski

ADCC Amateur World Championship 2024

No-Gi · Boys 11-12 years / Beginner / -45 kg

Sub (01:23 · 0–0)

Match details

Current estimated model contribution: Rating influence —
Duration: 01:23
Round: 4
Score: 0–0
Academy during event: Checkmat Poznań

Outside the current rating period

Win 2024-05-25

against Piotr Kopacz

ADCC Amateur World Championship 2024

No-Gi · Boys 11-12 years / Beginner / -45 kg

Sub (01:03 · 0–0)

Match details

Current estimated model contribution: Rating influence —
Duration: 01:03
Round: 3
Score: 0–0
Academy during event: Checkmat Poznań

Outside the current rating period

Win 2024-05-25

against Mirosław Zając

ADCC Amateur World Championship 2024

No-Gi · Boys 11-12 years / Beginner / -45 kg

Sub (00:56 · 0–0)

Match details

Current estimated model contribution: Rating influence —
Duration: 00:56
Round: 2
Score: 0–0
Academy during event: Checkmat Poznań

Outside the current rating period

Loss 2023-05-27

against Danila Ruslan Bergheim

NAGA Germany Grappling Championship

Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (01:58 · 0–0)

Match details

Current estimated model contribution

Duration

01:58

Round

Score

0–0

Academy during event

Zenith bjj

Outside the current rating period

Loss 2023-05-27

against Temirlan Valiyev

NAGA Germany Grappling Championship

No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (03:21 · 3–8)

Match details

Current estimated model contribution

Duration

03:21

Round

Score

3–8

Academy during event

Zenith bjj

Outside the current rating period

Win 2023-05-27

against Rafael Derache

NAGA Germany Grappling Championship

No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Pts (2–1)

Match details

Current estimated model contribution

Duration

04:00

Round

Score

2–1

Academy during event

Zenith bjj

Outside the current rating period

Loss 2022-09-03

against Temirlan Valiyev

NAGA Luxembourg Grappling Championship

Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (01:53 · 2–0)

Match details

Current estimated model contribution

Duration

01:53

Round

Score

2–0

Academy during event

Zenith bjj

Outside the current rating period

Win 2022-09-03

against Ulysses Sanner

NAGA Luxembourg Grappling Championship

Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (02:48 · 0–0)

Match details

Current estimated model contribution

Duration

02:48

Round

Score

0–0

Academy during event

Zenith bjj

Outside the current rating period

Win 2022-09-03

against Myriam DYA

NAGA Luxembourg Grappling Championship

Gi · Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (00:11 · 0–0)

Match details

Current estimated model contribution

Duration

00:11

Round

Score

0–0

Academy during event

Zenith bjj

Outside the current rating period

Loss 2022-09-03

against Blaize Tingle

NAGA Luxembourg Grappling Championship

No-Gi · Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years

Sub (01:53 · 1–1)

Match details

Current estimated model contribution

Duration

01:53

Round

Score

1–1

Academy during event

Zenith bjj

Outside the current rating period

Win 2020-09-05

against Ratmir Treiden

KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL

youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)

Sub (00:46 · 7–0)

Match details

Current estimated model contribution

Duration

00:46

Round

Score

7–0

Academy during event

Zenith bjj

Outside the current rating period

Win 2020-09-05

against Unknown User

KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL

youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)

Pts (15–0)

Match details

Current estimated model contribution

Duration

03:00

Round

Score

15–0

Academy during event

Zenith bjj

Outside the current rating period

Win 2020-09-05

against Michal Janele

KARL-MARX CUP 2020 GI & NOGI *CASH PRICES + POKAL

youth_ratings.formats.conflict · Pee-Wee (Boys & Girls) / - 32Kg Lightweight - BEGINNERS (bis 1,5 Jahre Erfahrung)

Sub (00:56 · 2–0)

Match details

Current estimated model contribution

Duration

00:56

Round

Score

2–0

Academy during event

Zenith bjj

Outside the current rating period