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Roman Marčenko

Tiger gym

W–L
12–3
Won and lost rating-eligible matches in the past 12 months.
Gi
1,480
Rating based on Gi matches in the past 12 months.
No-Gi
-
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
10
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
3
Silver
2
Bronze
0
Total medals
5
Events with results
5

Full career record

Wins
13
Losses
4
Matches
17
Win rate
76.5%

Ways of winning

Submission
9
Points
1
Decision
0
Disqualification
0
Other recorded result
3

Personal records

Longest winning streak
5
Longest submission streak
3
Longest gold streak
2

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
10
Distinct events
4

Ways of winning

  • Submission 8 67%
  • Points 1 8%
  • Decision 0 0%
  • Other recorded result 3 25%

Gi versus No-Gi

Gi

Rating
1480
Record
12–3
Win rate
80%
Submission share
67%

No-Gi

Rating
-
Record
-
Win rate
-
Submission share
-

Win quality

Grouped by pre-match win probability. This provides context and does not award an extra rating bonus.

As underdog 0–0 Less than 35% expected win probability before the match.
Even match 0–0 Between 35% and 65% expected win probability before the match.
As favourite 0–0 More than 65% expected win probability before the match.

Development

Rating and development

The same published rating, supported by trend, opponent strength and evidence quality.

Current rating
1,480
Change over 90 days
+99
Highest rating in 12 months
1,464
Performance versus expectation
+14.9 pp
Schedule strength
Top 44%
Average opponent rating
1,327
Weighted win rate
82%
Expected win rate
67%
Repeat-opponent share
33%
Effective evidence
8.6
Confidence
82/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 7–3 7–3 across 10 rematches against 5 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #29 Kiril Delos Santos · TATAMY 20: PRAGUE - KIDS (round robin) Sub 00:46 2–2
  2. #609 David Voloshchuk · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 0–0 Earlier · Sub 02:56 4–4 March 7, 2026 · 2026 AGF Prague Championships
  3. #1453 David Chromčák · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 00:42 2–0 Earlier · — 0–0 December 14, 2025 · Christmas Kids Ground BJJ Tour - Finálové kolo 2025
  4. #2480 Tobiáš Blahník · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 00:24 4–0
  5. #2719 Jeremiáš Fuccillo · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Pts 7–0 Earlier · Sub 01:56 13–0 March 21, 2026 · TATAMY 20: PRAGUE - KIDS (round robin)

Full career

  1. #29 Kiril Delos Santos · TATAMY 20: PRAGUE - KIDS (round robin) Sub 00:46 2–2
  2. #522 Luka Long · GRIND 11 Kids (NO-GI & GI ROUND ROBIN) Sub 01:14 4–2
  3. #609 David Voloshchuk · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 0–0 Earlier · Sub 02:56 4–4 March 7, 2026 · 2026 AGF Prague Championships
  4. #1453 David Chromčák · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 00:42 2–0 Earlier · — 0–0 December 14, 2025 · Christmas Kids Ground BJJ Tour - Finálové kolo 2025
  5. #2480 Tobiáš Blahník · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Sub 00:24 4–0
  6. #2719 Jeremiáš Fuccillo · GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Pts 7–0 Earlier · Sub 01:56 13–0 March 21, 2026 · TATAMY 20: PRAGUE - KIDS (round robin)

Rivals

Opponent Head-to-head record Matches

Around this athlete

Athlete Rank Rating
Noah Brendel #317 1,480
Roman Marčenko #318 1,480
Felicia Rüter #319 1,479

Recent tournaments

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 · 2 left period Change +9 Rating 1,480

Rating-period composition

Rating matches
15 -2
Record
12–3 Previous month 13–4
Opponents
10 -2
Events
4 -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.

July 2026 No new matches Change +2 Rating 1,471

Rating-period composition

Rating matches
17 0
Record
13–4 Previous month 13–4
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.

June 2026 No new matches Change +2 Rating 1,469

Rating-period composition

Rating matches
17 0
Record
13–4 Previous month 13–4
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.

May 2026 No new matches Change +3 Rating 1,467

Rating-period composition

Rating matches
17 0
Record
13–4 Previous month 13–4
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.

April 2026 6 new matches Change +34 Rating 1,464

Rating-period composition

Rating matches
17 +6
Record
13–4 Previous month 8–3
Opponents
12 +2
Events
5 +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 25, 2026 Tomáš Kozák
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Submission 03:02 0–2
Marginal influence -18
Win
April 25, 2026 David Chromčák
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Submission 00:42 2–0
Marginal influence +7
Win
April 25, 2026 Jeremiáš Fuccillo
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Points 04:00 7–0
Marginal influence +5
Win
April 25, 2026 Tobiáš Blahník
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Submission 00:24 4–0
Marginal influence +7
Win
April 25, 2026 Tomáš Kozák
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Submission 00:25 0–0
Marginal influence +13
Win
April 25, 2026 David Voloshchuk
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 10-12 years / Boy / -36 kg / Beginner
Method Submission 0–0
Marginal influence +13
March 2026 6 new matches Change +81 Rating 1,430

Rating-period composition

Rating matches
11 +6
Record
8–3 Previous month 4–1
Opponents
10 +5
Events
4 +2

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
March 21, 2026 Unknown opponent
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 03:39 2–15
Marginal influence -19
Win
March 21, 2026 Jeremiáš Fuccillo
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 01:56 13–0
Marginal influence +5
Win
March 21, 2026 Kiril Delos Santos
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 00:46 2–2
Marginal influence +25
Win
March 21, 2026 Cezary Soczówka
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
Method Submission 00:15 0–0
Marginal influence +7
Loss
March 7, 2026 Unknown opponent
2026 AGF Prague Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather III (Up to 38.60 kg)
Method Submission 01:59 6–4
Marginal influence -22
Win
March 7, 2026 David Voloshchuk
2026 AGF Prague Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather III (Up to 38.60 kg)
Method Submission 02:56 4–4
Marginal influence +17
February 2026 No new matches Change -1 Rating 1,349

Rating-period composition

Rating matches
5 0
Record
4–1 Previous month 4–1
Opponents
5 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.

January 2026 No new matches Change -15 Rating 1,350

Rating-period composition

Rating matches
5 0
Record
4–1 Previous month 4–1
Opponents
5 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.

December 2025 3 new matches Change +149 Rating 1,365

Rating-period composition

Rating matches
5 +3
Record
4–1 Previous month 1–1
Opponents
5 +3
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
December 14, 2025 Boris Nikolaev
Christmas Kids Ground BJJ Tour - Finálové kolo 2025 Kids mix 9-11 let - Kimono / -35kg
Method Other recorded result 01:16 0–0
Marginal influence +13
Win
December 14, 2025 David Chromčák
Christmas Kids Ground BJJ Tour - Finálové kolo 2025 Kids mix 9-11 let - Kimono / -35kg
Method Other recorded result 01:53 0–0
Marginal influence +9
Win
December 14, 2025 Arnold Polikarpov
Christmas Kids Ground BJJ Tour - Finálové kolo 2025 Kids mix 9-11 let - Kimono / -35kg
Method Other recorded result 00:18 0–0
Marginal influence +13
November 2025 No new matches Change -7 Rating 1,216

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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 No new matches Change -2 Rating 1,223

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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.

September 2025 No new matches Change +3 Rating 1,225

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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.

Relevant matches
8.6
Official ranking percentile
Top 11%
Performance
14.9 pp above expectation

8.6 weighted matches against 10 different opponents across 4 events

Weighted win rate
81.8%
Expected win rate
66.9%
Average opponent rating
1,327
Repeated-opponent share
33.3%
Network connectivity
80.9%

Classification evidence

Why U14?

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

  • U14 3 event votes Selected outcome

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
U14 · Counts
Gi / 10-12 years / Boy / -36 kg / Beginner
  • Competition age 12
TATAMY 20: PRAGUE - KIDS (round robin)
U14 · Counts
Kids / Gi / 10-12 years / Boys / White/grey belt / -36 kg
  • Competition age 12
2026 AGF Prague Championships
U14 · Counts
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather III (Up to 38.60 kg)
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Christmas Kids Ground BJJ Tour - Finálové kolo 2025
Does not count
Kids mix 9-11 let - Kimono / -35kg
  • Competition age 11

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 2 competition events Selected outcome
  • ≤ 39 kg 1 competition event

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
≤ 36 kg · Counts as a competition event
Gi / 10-12 years / Boy / -36 kg / Beginner
  • Registered weight class: -36 kg
  • Source competition limit: -36 kg

6 matches in the rating period

TATAMY 20: PRAGUE - KIDS (round robin)
≤ 36 kg · Counts as a competition event
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

2026 AGF Prague Championships
≤ 39 kg · Counts as a competition event
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather III (Up to 38.60 kg)
  • Registered weight class: Feather III (Up to 38.60 kg)
  • Source competition limit: Feather III (Up to 38.60 kg)

2 matches in the rating period

Christmas Kids Ground BJJ Tour - Finálové kolo 2025
≤ 35 kg · Does not count
Kids mix 9-11 let - Kimono / -35kg
  • Registered weight class: -35kg
  • Source competition limit: -35kg

3 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 4 matches in the rating period Selected outcome
  • white 2 matches in the rating period

Registrations and outcomes

TATAMY 20: PRAGUE - KIDS (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

2026 AGF Prague Championships
white · Counts as a match
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather III (Up to 38.60 kg)
  • Source belt category: white

2 matches in the rating period