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Oliver Balej

Base Bjj Nitra

W–L
21–12
Won and lost rating-eligible matches in the past 12 months.
Gi
1,434
Rating based on Gi matches in the past 12 months.
No-Gi
1,382
Rating based on No-Gi matches in the past 12 months.
Current form
8–2
Results from the ten most recent rating-eligible matches.
Opponents
21
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

72
Indexed competition matches
Date Opponent Result Event Division
2024-10-19 Illa Kravchenko
Win
NoEXCUSE! 8 Gi · GI - Little Kids Mix / -32 kg
2024-04-20 Simon Kovac
Loss
ADCC Czech Open 2024 No-Gi · Kids Mix 7-8 years / Beginner / -36kg
2024-04-20 AARON Koppert
Win
ADCC Czech Open 2024 No-Gi · Kids Mix 7-8 years / Beginner / -36kg
2024-03-09 Simon Kovac
Loss
TATAMY 8 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2024-03-09 Marcus Holcek
Win
TATAMY 8 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2024-03-09 Alexander Polák
Win
TATAMY 8 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2024-03-09 Bilal Kay
Loss
TATAMY 8 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2024-02-25 Kristian Langer
Win
XIII. REBEL BJJ CUP KIDS Gi · Boys Gi / Yellow orange green / Pee Wee (7-9 yrs) / -29 kg (2015,2016,2017)
2024-02-25 Kryštof Jan Vondráček
Loss
XIII. REBEL BJJ CUP KIDS Gi · Boys Gi / Yellow orange green / Pee Wee (7-9 yrs) / -29 kg (2015,2016,2017)
2024-02-25 Eliáš Mánek
Loss
XIII. REBEL BJJ CUP KIDS Gi · Boys Gi / Yellow orange green / Pee Wee (7-9 yrs) / -29 kg (2015,2016,2017)
2024-02-25 Robin Mika
Win
XIII. REBEL BJJ CUP KIDS Gi · Boys Gi / Yellow orange green / Pee Wee (7-9 yrs) / -29 kg (2015,2016,2017)
2023-12-10 Jan Koch
Loss
XI. GrappleXmas BJJ Cup KIDS No-Gi · Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2014,2015,2016)
2023-12-10 Michal Mitlehner
Loss
XI. GrappleXmas BJJ Cup KIDS No-Gi · Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2014,2015,2016)
2023-12-10 Štefan Jakubec
Loss
XI. GrappleXmas BJJ Cup KIDS No-Gi · Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2014,2015,2016)
2023-12-02 Mykola Yuryshynets
Win
TATAMY 7 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2023-12-02 Lariska Kostova
Win
TATAMY 7 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2023-12-02 Andrei Marakhovskii
Loss
TATAMY 7 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2023-12-02 Darek Krocil
Win
TATAMY 7 (NO-GI and GI round robin) Gi · Kids / Gi / 7-9 years / Mix / All levels / -28 kg
2023-11-11 Alex Janda
Win
NoEXCUSE! 7 Gi · GI - Little Kids Mix / -28 kg
2023-11-11 Marek Šulcer
Win
NoEXCUSE! 7 Gi · GI - Little Kids Mix / -28 kg
2023-11-11 Alexander Polák
Win
NoEXCUSE! 7 Gi · GI - Little Kids Mix / -28 kg
2023-11-11 Simon Kovac
Loss
NoEXCUSE! 7 Gi · GI - Little Kids Mix / -28 kg

Calculation details

Rating breakdown for the past 12 months

See the published month-end rating and the rating-eligible matches added in each month. Open a month for details.

August 2026 No new matches Change 0 Rating 1,466

Rating-period composition

Rating matches
33 0
Record
21–12 Previous month 21–12
Opponents
21 0
Events
8 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

July 2026 No new matches Change 0 Rating 1,466

Rating-period composition

Rating matches
33 0
Record
21–12 Previous month 21–12
Opponents
21 0
Events
8 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

June 2026 4 new matches · 2 left period Change +20 Rating 1,466

Rating-period composition

Rating matches
33 +2
Record
21–12 Previous month 18–13
Opponents
21 -2
Events
8 0

2 older matches left the 12-month period: 1 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
June 20, 2026 Vojtěch Voznica
Open Czech championship submission only 2026 NOGI - Kids boys 10-13y / -36 kg / Intermediate (2-4 years of training)
Method Submission 01:07 0–0
Marginal influence +3
Win
June 20, 2026 Vojtěch Voznica
Open Czech championship submission only 2026 NOGI - Kids boys 10-13y / -36 kg / Intermediate (2-4 years of training)
Method Submission 03:01 0–0
Marginal influence +3
Win
June 20, 2026 Vojtěch Voznica
Open Czech championship submission only 2026 GI - Kids boys 10-13y / -36 kg / Orange belt
Method Submission 01:19 0–0
Marginal influence +5
Win
June 20, 2026 Vojtěch Voznica
Open Czech championship submission only 2026 GI - Kids boys 10-13y / -36 kg / Orange belt
Method Decision 03:12 0–0
Marginal influence +5
May 2026 6 new matches · 2 left period Change +15 Rating 1,446

Rating-period composition

Rating matches
31 +4
Record
18–13 Previous month 15–12
Opponents
23 +1
Events
8 +1

2 older matches left the 12-month period: 1 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
ADCC CZECH OPEN CHAMPIONSHIP 2026 Boys 11-12 years / Beginner / -36 kg
Method Submission 00:51 0–0
Marginal influence -10
Win
May 2, 2026 Tobias Kováč
Valachien Challenge Gi 2026 Kids Mix 9-10 years / All belts / -36kg
Method Points 03:00 13–0
Marginal influence +6
Win
May 2, 2026 Vojtěch Voznica
Valachien Challenge Gi 2026 Kids Mix 9-10 years / All belts / -36kg
Method Submission 00:48 0–0
Marginal influence +4
Win
May 2, 2026 Alexander Polák
Valachien Challenge Gi 2026 Kids Mix 9-10 years / All belts / -36kg
Method Submission 00:44 2–0
Marginal influence +6
Win
May 2, 2026 Jan Lazárek
Valachien Challenge Gi 2026 Kids Mix 9-10 years / All belts / -36kg
Method Submission 00:22 2–0
Marginal influence +3
Loss
May 2, 2026 Tobias Kováč
Valachien Challenge Gi 2026 Kids Mix 9-10 years / All belts / -36kg
Method Points 03:00 6–6
Marginal influence -5
April 2026 5 new matches · 2 left period Change +41 Rating 1,431

Rating-period composition

Rating matches
27 +3
Record
15–12 Previous month 12–12
Opponents
22 0
Events
7 0

2 older matches left the 12-month period: 0 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
April 18, 2026 Vitězslav Pítr
XV. REBEL BJJ CUP Boys Gi / Yellow orange green / Junior (10-11yrs) / -39 kg (2015,2016)
Method Submission 00:48 0–3
Marginal influence -7
Win
April 18, 2026 Alexander Polák
XV. REBEL BJJ CUP Boys Gi / Yellow orange green / Junior (10-11yrs) / -39 kg (2015,2016)
Method Submission 01:00 2–0
Marginal influence +8
Win
April 18, 2026 Alexander Polák
XV. REBEL BJJ CUP Boys No-Gi / All belt / Junior (10-11yrs) / -39 kg (2015,2016)
Method Submission 01:27 9–0
Marginal influence +7
Loss
April 18, 2026 Vitězslav Pítr
XV. REBEL BJJ CUP Boys No-Gi / All belt / Junior (10-11yrs) / -39 kg (2015,2016)
Method Submission 00:46 0–6
Marginal influence -7
Win
April 18, 2026 Vojta Novák
XV. REBEL BJJ CUP Boys No-Gi / All belt / Junior (10-11yrs) / -39 kg (2015,2016)
Method Submission 01:09 2–0
Marginal influence +4
March 2026 7 new matches Change +34 Rating 1,390

Rating-period composition

Rating matches
24 +7
Record
12–12 Previous month 8–9
Opponents
22 +6
Events
7 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
March 22, 2026 Jakub Dominik
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 01:13 9–0
Marginal influence +6
Win
March 22, 2026 Alexander Polák
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 00:32 4–2
Marginal influence +6
Win
March 22, 2026 Lukáš Oravecz
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 02:46 9–0
Marginal influence +8
Loss
March 22, 2026 Štefan Jakubec
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 00:12 0–4
Marginal influence -7
Loss
March 22, 2026 Tobias Kováč
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 00:13 0–0
Marginal influence -5
Win
March 22, 2026 Matej Kubík
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
Method Submission 01:03 2–0
Marginal influence +8
Loss
March 22, 2026 Jakub Dominik
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
Method Points 03:00 2–16
Marginal influence -10
February 2026 5 new matches Change -9 Rating 1,356

Rating-period composition

Rating matches
17 +5
Record
8–9 Previous month 6–6
Opponents
16 +4
Events
6 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
February 21, 2026 Unknown opponent
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
Method Submission 00:49 0–0
Marginal influence +3
Win
February 21, 2026 Markó Rebeka
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
Method Submission 01:53 0–0
Marginal influence +4
Loss
February 21, 2026 Yusuf Khamburaev
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
Method Points 04:00 0–6
Marginal influence -6
Loss
February 21, 2026 Adam Jeznach
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
Method Submission 00:14 0–0
Marginal influence -8
Loss
February 21, 2026 Yusuf Khamburaev
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
Method Points 04:00 4–6
Marginal influence -6
January 2026 No new matches Change +1 Rating 1,365

Rating-period composition

Rating matches
12 0
Record
6–6 Previous month 6–6
Opponents
12 0
Events
5 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

December 2025 No new matches Change +7 Rating 1,364

Rating-period composition

Rating matches
12 0
Record
6–6 Previous month 6–6
Opponents
12 0
Events
5 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

November 2025 No new matches · 8 left period Change -44 Rating 1,357

Rating-period composition

Rating matches
12 -8
Record
6–6 Previous month 10–10
Opponents
12 -4
Events
5 -1

8 older matches left the 12-month period: 4 won and 4 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

October 2025 2 new matches · 3 left period Change -28 Rating 1,401

Rating-period composition

Rating matches
20 -1
Record
10–10 Previous month 11–10
Opponents
16 -1
Events
6 0

3 older matches left the 12-month period: 3 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
October 25, 2025 Dominik Matusik
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Junior (10-11yrs) / -33 kg (2014,2015)
Method Submission 00:16 2–0
Marginal influence +6
Win
October 25, 2025 Adam Šmajstrla
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Junior (10-11yrs) / -33 kg (2014,2015)
Method Submission 00:41 9–0
Marginal influence +9
September 2025 4 new matches Change +32 Rating 1,429

Rating-period composition

Rating matches
21 +4
Record
11–10 Previous month 9–8
Opponents
17 +3
Events
6 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
September 20, 2025 Andrei Marakhovskii
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 00:51 0–0
Marginal influence -11
Win
September 20, 2025 Platon Gorokhov
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Disqualification 0–0
Marginal influence +8
Win
September 20, 2025 Volodymyr Demchuk
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 00:56 0–0
Marginal influence +7
Loss
September 20, 2025 Zubayr Tsikhesashev
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 00:26 0–0
Marginal influence -4
Relevant matches
21
Official ranking percentile
Top 12%
Performance
7.5 pp above expectation

21 weighted matches against 21 different opponents across 8 events

Weighted win rate
62.9%
Expected win rate
55.4%
Average opponent rating
1,363
Repeated-opponent share
36.4%
Network connectivity
80.9%

Classification evidence

Why U12?

Within the published period from 2025-09-01 through 2026-08-31, only competition ages recorded at events in the calculation year determine this outcome, with at most one vote per event. Without such an age, the most recent unambiguous earlier competition age is projected to the calculation year; bracket evidence is the final fallback. The newest evidence breaks a tie.

Evidence outcome

  • U12 6 event votes Selected outcome

Registrations and outcomes

Open Czech championship submission only 2026
U12 · Counts
GI - Kids boys 10-13y / -36 kg / Orange belt
  • Competition age 11
  • Registered age: u12
  • Source category: u12
NOGI - Kids boys 10-13y / -36 kg / Intermediate (2-4 years of training)
  • Competition age 11
  • Registered age: u12
  • Source category: u12
ADCC CZECH OPEN CHAMPIONSHIP 2026
U12 · Counts
Boys 11-12 years / Beginner / -36 kg
  • Competition age 11
Valachien Challenge Gi 2026
U12 · Counts
Kids Mix 9-10 years / All belts / -36kg
  • Competition age 11
XV. REBEL BJJ CUP
U12 · Counts
Boys No-Gi / All belt / Junior (10-11yrs) / -39 kg (2015,2016)
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi / Yellow orange green / Junior (10-11yrs) / -39 kg (2015,2016)
  • Competition age 11
  • Registered age: u12
  • Source category: u12
N-GEN Kids BJJ Tournament #4
U12 · Counts
Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
  • Competition age 11
  • Registered age: u12
  • Source category: u12
TATAMY 19: Czech Open Championship (kids)
U12 · Counts
Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
  • Competition age 11
N-GEN Kids BJJ Tournament #3
Does not count
Boys Gi / White grey / Junior (10-11yrs) / -33 kg (2014,2015)
  • Competition age 10
  • Registered age: u12
  • Source category: u12
TATAMY 16 KIDS (No-GI and GI round robin)
Does not count
Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
  • Competition age 10
Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
  • Competition age 10

Classification evidence

Why ≤ 36 kg?

This outcome uses at most one unambiguous upper weight limit per completed ranking event from 2025-09-01 through 2026-08-31. Only the three most recent eligible events are considered, and the lightest verified upper limit is selected. A higher division is not treated as measured body weight.

Evidence outcome

  • ≤ 36 kg 3 competition events Selected outcome

Registrations and outcomes

Open Czech championship submission only 2026
≤ 36 kg · Counts as a competition event
GI - Kids boys 10-13y / -36 kg / Orange belt
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

2 matches in the rating period

Open Czech championship submission only 2026
≤ 36 kg · Counts as a competition event
NOGI - Kids boys 10-13y / -36 kg / Intermediate (2-4 years of training)
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

2 matches in the rating period

ADCC CZECH OPEN CHAMPIONSHIP 2026
≤ 36 kg · Counts as a competition event
Boys 11-12 years / Beginner / -36 kg
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

1 match in the rating period

Valachien Challenge Gi 2026
≤ 36 kg · Counts as a competition event
Kids Mix 9-10 years / All belts / -36kg
  • Registered weight class: -36kg
  • Source competition limit: -36kg

5 matches in the rating period

XV. REBEL BJJ CUP
≤ 39 kg · Does not count
Boys No-Gi / All belt / Junior (10-11yrs) / -39 kg (2015,2016)
  • Registered weight class: -39 kg (2015,2016)
  • Source competition limit: -39 kg (2015,2016)

3 matches in the rating period · outside the three most recent unambiguous events

XV. REBEL BJJ CUP
≤ 39 kg · Does not count
Boys Gi / Yellow orange green / Junior (10-11yrs) / -39 kg (2015,2016)
  • Registered weight class: -39 kg (2015,2016)
  • Source competition limit: -39 kg (2015,2016)

2 matches in the rating period · outside the three most recent unambiguous events

N-GEN Kids BJJ Tournament #4
≤ 36 kg · Does not count
Boys No-Gi / All belt / Junior (10-11yrs) / -36 kg (2015,2016)
  • Registered weight class: -36 kg (2015,2016)
  • Source competition limit: -36 kg (2015,2016)

4 matches in the rating period · outside the three most recent unambiguous events

N-GEN Kids BJJ Tournament #4
≤ 36 kg · Does not count
Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
  • Registered weight class: -36 kg (2015,2016)
  • Source competition limit: -36 kg (2015,2016)

3 matches in the rating period · outside the three most recent unambiguous events

TATAMY 19: Czech Open Championship (kids)
≤ 36 kg · Does not count
Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

5 matches in the rating period · outside the three most recent unambiguous events

N-GEN Kids BJJ Tournament #3
≤ 33 kg · Does not count
Boys Gi / White grey / Junior (10-11yrs) / -33 kg (2014,2015)
  • Registered weight class: -33 kg (2014,2015)
  • Source competition limit: -33 kg (2014,2015)

2 matches in the rating period · outside the three most recent unambiguous events

TATAMY 16 KIDS (No-GI and GI round robin)
Does not count
Kids / No Gi / 10-12 years / Boys / Intermediate / -36 kg
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

No matches in the rating period · no valid weight evidence

TATAMY 16 KIDS (No-GI and GI round robin)
≤ 36 kg · Does not count
Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

4 matches in the rating period · outside the three most recent unambiguous events

Classification evidence

Why Grey?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • grey 9 matches in the rating period Selected outcome
  • orange 2 matches in the rating period
  • green 2 matches in the rating period

Registrations and outcomes

Open Czech championship submission only 2026
orange · Counts as a match
GI - Kids boys 10-13y / -36 kg / Orange belt
  • Source belt category: orange

2 matches in the rating period

XV. REBEL BJJ CUP
green · Counts as a match
Boys Gi / Yellow orange green / Junior (10-11yrs) / -39 kg (2015,2016)
  • Source belt category: green

2 matches in the rating period

N-GEN Kids BJJ Tournament #4
grey · Counts as a match
Boys Gi / White grey / Junior (10-11yrs) / -36 kg (2015,2016)
  • Source belt category: grey

3 matches in the rating period

N-GEN Kids BJJ Tournament #3
grey · Counts as a match
Boys Gi / White grey / Junior (10-11yrs) / -33 kg (2014,2015)
  • Source belt category: grey

2 matches in the rating period

TATAMY 16 KIDS (No-GI and GI round robin)
grey · Counts as a match
Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
  • Source belt category: grey

4 matches in the rating period