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UA

Volodymyr Gamzian

MATHIAS RIBEIRO TEAM

≤ 55 kg
W–L
4–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,148
Rating based on Gi matches in the past 12 months.
No-Gi
1,318
Rating based on No-Gi matches in the past 12 months.
Current form
7–3
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

38
Events
Date Event Result Format Division
ADCC Amateur World Championship 2026 PL · No-Gi · 13–14 yo · ≤60 kg 1–1 W–L: Win / Loss No-Gi
  • Place #9
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) France · Gi · 12–13 yo · 55–59.9 kg ; No-Gi · 12–13 yo · 55–59.9 kg 3–2 W–L: Win / Loss GiNo-Gi
  • Children No-Gi (Male) / Expert / 55 - 59.9 / 12-13 years
  • Children Gi (Male) / Expert / 55 - 59.9 / 12-13 years
SOUTHEAST SUBMISSION SERIES ES · Gi · white/grey · ≤56 kg 3–0 W–L: Win / Loss Gi
  • NIÑOS GI / TEEN / White and Grey / -56kg
NAGA Europe Grappling Championship Germany · Gi · 12–13 yo · 50–54.9 kg ; No-Gi · 12–13 yo · 50–54.9 kg 1–3 W–L: Win / Loss GiNo-Gi
  • Children Gi (Male) / Expert / 50 - 54.9 / 12-13 years
  • Children No-Gi (Male) / Expert / 50 - 54.9 / 12-13 years
WORLD CUP BJJ 2025 ES · Gi · grey · ≤50 kg ; No-Gi · grey · ≤54 kg 1–1 W–L: Win / Loss GiNo-Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
  • Kids Boys NO-GI / Grey / Infanto Juvenil A / -54,0 kg
Grappling Industries MADRID ES · Gi · 12–13 yo · grey · ≤115 lb ; No-Gi · 12–13 yo · grey · ≤115 lb 7–0 W–L: Win / Loss GiNo-Gi
  • No Gi Kids / Intermediate (Grey) / 12 - 13 years (Male) / -115 lbs
  • Gi Kids / Grey / 12 - 13 years (Male) / -115 lbs
KIMURA CUP ALICANTE 2025. ES · Gi · grey · ≤50 kg ; No-Gi · grey · ≤50 kg 2–2 W–L: Win / Loss GiNo-Gi
  • Boys Gi / Grey / Junior / -50 kg
  • Boys No-Gi / Grey / Junior / -50 kg
CAMPEONATO DE ESPAÑA DE BJJ GI & NO-GI 2025 ES · Gi · grey · ≤50 kg ; No-Gi · grey/yellow · ≤47 kg 3–0 W–L: Win / Loss GiNo-Gi
  • Kids Boys NO-GI / Grey-Yellow / Infanto Juvenil B / -51,0 kg
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
EUROPE CUP BJJ 2024 ES · Gi · grey · ≤50 kg 1–0 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
KIMURA CUP MADRID 2024 ES · Gi · grey · ≤50 kg ; No-Gi · white/grey · ≤50 kg 3–0 W–L: Win / Loss GiNo-Gi
  • Boys No-Gi / White - Grey / Junior / -50 kg
  • Boys Gi / Grey / Junior / -50 kg
OPEN COSTA DAURADA 2024 ES · Gi · grey · ≤50 kg 3–0 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
ADCC SPANISH NATIONAL OPEN 2024 ES · No-Gi · 11–12 yo · ≤50 kg 2–0 W–L: Win / Loss No-Gi
  • Boys 11-12 years / Beginner / -50kg
SUMMER CUP BJJ GI 2024 ES · Gi · grey · ≤50 kg 1–1 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
WORLD CUP BJJ 2024 ES · Gi · grey · ≤50 kg 2–0 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
CAMPEONATO DE ESPAÑA DE BJJ GI & NO-GI 2024 ES · Gi · grey · ≤50 kg 1–0 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infanto Juvenil A / -50,0 Kg
Copa de Madrid 2024 | Gi - NoGi - Kids ES · Gi · grey · ≤48 kg 2–0 W–L: Win / Loss GiNo-Gi
  • Niños GI / Grey / Cadete 1 / -48 Kg
  • Niños No-GI / Grey / Cadete 2 / -51 Kg
GILAND BJJ 2024 ES · Gi · white/grey · ≤46 kg 3–0 W–L: Win / Loss Gi
  • Kids Boys GI / White-Grey / Infanto Juvenil A / -46,0 kg
XV Campeonato de España 2024 (Gi, NoGi & Kids) ES · Gi · grey · ≤48 kg 1–0 W–L: Win / Loss Gi
  • Niños GI / Grey / Cadete 1 / -48 Kg
Copa de España 2023 | Gi - NoGi - Kids ES · Gi · grey · ≤45 kg 1–0 W–L: Win / Loss Gi
  • Niños GI / Grey / Infantil / -45 Kg
MADRID CUP BJJ 2023 ES · Gi · grey · ≤44.7 kg 2–0 W–L: Win / Loss Gi
  • Kids Boys GI / Grey / Infantil B / -44,7 kg
Copa Kimura Madrid 2023 | Gi - NoGi - Kids ES · Gi · grey · ≤45 kg ; No-Gi · grey · ≤45 kg 3–1 W–L: Win / Loss GiNo-Gi
  • Boys Gi / Grey / Infantil / -45 kg
  • Boys No-Gi / Grey / Infantil / -45 kg
European Grand Prix 2023 | Gi - NoGi - Kids ES · Gi · grey · ≤45 kg 1–0 W–L: Win / Loss Gi
  • Niños GI / Grey / Infantil / -45 Kg
EUROPE BJJ CUP KIDS 2023 ES · Gi · grey · ≤44 kg 3–0 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infantil B / -44,0 kg
OPEN COSTA DAURADA BJJ 2023 ES · Gi · grey · ≤44 kg 2–0 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infantil B / -44,0 kg
ADCC SPANISH NATIONAL OPEN 2023 ES · No-Gi · 11–12 yo · ≤45 kg 1–0 W–L: Win / Loss No-Gi
  • Boys 11-12 years / Beginner / -45kg
SUMMER CUP BJJ Gi 2023 ES · Gi · grey · ≤42 kg 1–0 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infant / -42kg
Grappling Industries MADRID ES · Gi · 10–11 yo · grey · ≤95 lb ; No-Gi · 12–13 yo · grey · ≤95 lb 4–0 W–L: Win / Loss GiNo-Gi
  • No Gi Kids / Intermediate (Grey) / 12 - 13 years / -95 lbs
  • Gi Kids / Grey / 10 - 11 years / -95 lbs
DRYFACTOR BJJ CUP KIDS 2023 ES 0–0 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infantil B / -44,0 kg
CAMPEONATO DE ESPAÑA DE BJJ KIDS 2023 ES · Gi · white/grey · ≤44 kg 1–0 W–L: Win / Loss Gi
  • Boys Gi / White-Grey / Infantil B / -44,0 kg
COPA KIMURA ES · Gi · grey · ≤45 kg 1–1 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infantil / -45 kg
Copa Dark Brazilian Jiu-jitsu (kimonos para los campeones de todas las categorías*) ES · Gi · grey · ≤45 kg 1–0 W–L: Win / Loss Gi
  • Niños Gi / Grey / Infantil / -45 Kg
GILAND BJJ KIDS 2023 ES · Gi · grey · ≤44 kg 2–0 W–L: Win / Loss Gi
  • Boys Gi / Grey / Infantil B / -44,0 kg
Campeonato de España 2023 (Gi, NoGi & Kids) ES · Gi · grey · ≤42 kg 1–0 W–L: Win / Loss Gi
  • Niños Gi / Grey / Infantil / -42 Kg
European Grand Prix 2022 \ Gi - NoGi - Kids ES · Gi · white · ≤42 kg 1–0 W–L: Win / Loss Gi
  • Niños Gi / White / Infantil / -42 Kg
SPAIN BJJ TOUR KIDS FESTIVAL ES · Gi · white/grey · ≤44 kg 2–0 W–L: Win / Loss Gi
  • Boys Gi / White-Grey / Infantil B (2011-2012) / -44,70 kg
OPEN COSTA DAURADA KIDS ES · Gi · white · ≤38.5 kg 1–0 W–L: Win / Loss Gi
  • Boys Gi / White / Infanto Juvenil A (2009-2010) / -41 kg
ADCC SPANISH NATIONAL 2022 ES · No-Gi · 7–10 yo · ≤40 kg 0–1 W–L: Win / Loss No-Gi
  • Boys junior / 7-10 years / -40 kg
Supercopa de España 2022 - Gi, NoGi & Kids ES · Gi · white · ≤42 kg 2–0 W–L: Win / Loss Gi
  • Niños Gi / White / Infantil / -42 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 1,321

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
4 0
Events
2 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 1,321

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
4 0
Events
2 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 +1 Rating 1,321

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
4 0
Events
2 0

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

May 2026 No new matches Change -2 Rating 1,320

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
4 0
Events
2 0

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

April 2026 No new matches Change -2 Rating 1,322

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
4 0
Events
2 0

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

March 2026 5 new matches Change +66 Rating 1,324

Rating-period composition

Rating matches
9 +5
Record
4–5 Previous month 1–3
Opponents
4 +2
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.
Win
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) Children No-Gi (Male) / Expert / 55 - 59.9 / 12-13 years
Method Decision 03:07 0–0
Marginal influence +29
Win
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) Children No-Gi (Male) / Expert / 55 - 59.9 / 12-13 years
Method Points 04:00 5–0
Marginal influence +29
Loss
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) Children Gi (Male) / Expert / 55 - 59.9 / 12-13 years
Method Submission 00:38 0–0
Marginal influence -15
Win
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) Children Gi (Male) / Expert / 55 - 59.9 / 12-13 years
Method Points 04:00 6–0
Marginal influence +6
Loss
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older) Children Gi (Male) / Expert / 55 - 59.9 / 12-13 years
Method Points 04:00 2–6
Marginal influence -15
February 2026 No new matches Change 0 Rating 1,258

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
Opponents
2 0
Events
1 0

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

January 2026 No new matches Change 0 Rating 1,258

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
Opponents
2 0
Events
1 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 0 Rating 1,258

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
Opponents
2 0
Events
1 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 Change 0 Rating 1,258

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
Opponents
2 0
Events
1 0

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

October 2025 4 new matches Change Starting point Rating 1,258

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
October 4, 2025 Victor Lebedev
NAGA Europe Grappling Championship Children Gi (Male) / Expert / 50 - 54.9 / 12-13 years
Method Submission 01:18 0–2
Marginal influence -19
Loss
October 4, 2025 Victor Lebedev
NAGA Europe Grappling Championship Children Gi (Male) / Expert / 50 - 54.9 / 12-13 years
Method Submission 01:01 0–13
Marginal influence -19
Win
October 4, 2025 Yakup Kangal
NAGA Europe Grappling Championship Children No-Gi (Male) / Expert / 50 - 54.9 / 12-13 years
Method Submission 03:42 8–0
Marginal influence +21
Loss
October 4, 2025 Victor Lebedev
NAGA Europe Grappling Championship Children No-Gi (Male) / Expert / 50 - 54.9 / 12-13 years
Method Points 04:00 0–3
Marginal influence -9
Relevant matches
5.9
Official ranking percentile
Top 53%
Performance
-

5.9 weighted matches against 4 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,329
Repeated-opponent share
55.6%
Network connectivity
87.6%

Classification evidence

Why U16?

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

  • U16 2 event votes Selected outcome

Registrations and outcomes

NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older)
U16 · Counts
Children Gi (Male) / Expert / 55 - 59.9 / 12-13 years
  • Competition age 14
  • Registered age: u14
  • Source category: u14
Children No-Gi (Male) / Expert / 55 - 59.9 / 12-13 years
  • Competition age 14
  • Registered age: u14
  • Source category: u14
SOUTHEAST SUBMISSION SERIES
U16 · Counts
NIÑOS GI / TEEN / White and Grey / -56kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
NAGA Europe Grappling Championship
Does not count
Children Gi (Male) / Expert / 50 - 54.9 / 12-13 years
  • Competition age 13
  • Registered age: u14
  • Source category: u14
Children No-Gi (Male) / Expert / 50 - 54.9 / 12-13 years
  • Competition age 13
  • Registered age: u14
  • Source category: u14

Classification evidence

Why White?

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

  • white 3 matches in the rating period Selected outcome

Registrations and outcomes

SOUTHEAST SUBMISSION SERIES
white · Counts as a match
NIÑOS GI / TEEN / White and Grey / -56kg
  • Source belt category: white

3 matches in the rating period