TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
CZ

Stela Byrtusová

Jungle BJJ Frenštát

W–L
1–10
Won and lost rating-eligible matches in the past 12 months.
Gi
1,144
Rating based on Gi matches in the past 12 months.
No-Gi
1,038
Rating based on No-Gi matches in the past 12 months.
Current form
1–9
Results from the ten most recent rating-eligible matches.
Opponents
9
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

3
Events
Date Event Result Format Division
ADCC CZECH OPEN CHAMPIONSHIP 2026 CZ · No-Gi · 7–8 yo · ≤36 kg 0–2 W–L: Win / Loss No-Gi
  • Place #4
XV. REBEL BJJ CUP CZ · Gi · 7–9 yo · white/grey · ≤35 kg ; No-Gi · 7–9 yo · ≤32 kg 0–7 W–L: Win / Loss GiNo-Gi
  • Place #5
  • Place #4
N-GEN Kids BJJ Tournament #4 CZ · Gi · 7–9 yo · ≤32 kg 1–1 W–L: Win / Loss Gi
  • Girls Gi / All belt / Pee Wee (7-9yrs) / -32 kg (2017,2018,2019)

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 1,165

Rating-period composition

Rating matches
11 0
Record
1–10 Previous month 1–10
Opponents
9 0
Events
3 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 -2 Rating 1,165

Rating-period composition

Rating matches
11 0
Record
1–10 Previous month 1–10
Opponents
9 0
Events
3 0

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

June 2026 No new matches Change +2 Rating 1,167

Rating-period composition

Rating matches
11 0
Record
1–10 Previous month 1–10
Opponents
9 0
Events
3 0

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

May 2026 2 new matches Change -25 Rating 1,165

Rating-period composition

Rating matches
11 +2
Record
1–10 Previous month 1–8
Opponents
9 +1
Events
3 +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
ADCC CZECH OPEN CHAMPIONSHIP 2026 Kids Mix 7-8 years / Beginner / -36kg
Method Submission 00:58 0–0
Marginal influence -10
Loss
ADCC CZECH OPEN CHAMPIONSHIP 2026 Kids Mix 7-8 years / Beginner / -36kg
Method Submission 02:02 0–3
Marginal influence -23
April 2026 7 new matches Change -33 Rating 1,190

Rating-period composition

Rating matches
9 +7
Record
1–8 Previous month 1–1
Opponents
8 +6
Events
2 +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
April 18, 2026 Daniil Prokopenko
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
Method Submission 01:32 0–6
Marginal influence -6
Loss
April 18, 2026 Jakub Simicek
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
Method Points 03:00 2–8
Marginal influence -9
Loss
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
Method Points 03:00 0–0
Marginal influence -8
Loss
April 18, 2026 Daniil Prokopenko
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
Method Submission 01:58 0–9
Marginal influence -8
Loss
April 18, 2026 Antonin Tůma
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
Method Points 03:00 9–9
Marginal influence -18
Loss
April 18, 2026 Daniel Cetkovsky
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
Method Submission 02:50 0–4
Marginal influence -13
Loss
April 18, 2026 Oliver Alčer
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
Method Submission 01:36 0–2
Marginal influence -11
March 2026 2 new matches Change Starting point Rating 1,223

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
N-GEN Kids BJJ Tournament #4 Girls Gi / All belt / Pee Wee (7-9yrs) / -32 kg (2017,2018,2019)
Method Points 03:00 2–0
Marginal influence +28
Loss
March 22, 2026 Stela Cabúková
N-GEN Kids BJJ Tournament #4 Girls Gi / All belt / Pee Wee (7-9yrs) / -32 kg (2017,2018,2019)
Method Submission 00:31 2–0
Marginal influence -3
Relevant matches
8
Official ranking percentile
Top 93%
Performance
34.9 pp below expectation

8 weighted matches against 9 different opponents across 3 events

Weighted win rate
10.5%
Expected win rate
45.4%
Average opponent rating
1,320
Repeated-opponent share
18.2%
Network connectivity
80.9%

Classification evidence

Why U10?

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

  • U10 3 event votes Selected outcome

Registrations and outcomes

ADCC CZECH OPEN CHAMPIONSHIP 2026
U10 · Counts
Kids Mix 7-8 years / Beginner / -36kg
  • Competition age 8
XV. REBEL BJJ CUP
U10 · Counts
Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
  • Competition age 8
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
  • Competition age 8
N-GEN Kids BJJ Tournament #4
U10 · Counts
Girls Gi / All belt / Pee Wee (7-9yrs) / -32 kg (2017,2018,2019)
  • Competition age 8

Classification evidence

Why ≤ 32 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

  • ≤ 32 kg 1 competition event Selected outcome
  • ≤ 36 kg 1 competition event

Registrations and outcomes

ADCC CZECH OPEN CHAMPIONSHIP 2026
≤ 36 kg · Counts as a competition event
Kids Mix 7-8 years / Beginner / -36kg
  • Registered weight class: -36kg
  • Source competition limit: -36kg

2 matches in the rating period

XV. REBEL BJJ CUP
≤ 35 kg · Does not count
Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
  • Registered weight class: -35 kg (2017,2018,2019)
  • Source competition limit: -35 kg (2017,2018,2019)

3 matches in the rating period · conflicting upper weight limits make this event ambiguous

XV. REBEL BJJ CUP
≤ 32 kg · Does not count
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -32 kg (2017,2018,2019)
  • Registered weight class: -32 kg (2017,2018,2019)
  • Source competition limit: -32 kg (2017,2018,2019)

4 matches in the rating period · conflicting upper weight limits make this event ambiguous

N-GEN Kids BJJ Tournament #4
≤ 32 kg · Counts as a competition event
Girls Gi / All belt / Pee Wee (7-9yrs) / -32 kg (2017,2018,2019)
  • Registered weight class: -32 kg (2017,2018,2019)
  • Source competition limit: -32 kg (2017,2018,2019)

2 matches in the rating period

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 3 matches in the rating period Selected outcome

Registrations and outcomes

XV. REBEL BJJ CUP
grey · Counts as a match
Boys Gi / White grey / Pee Wee (7-9 yrs) / -35 kg (2017,2018,2019)
  • Source belt category: grey

3 matches in the rating period