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Robert Rafail Koukaras

DTV -Delmenhorst #Triangle Jiu Jitsu Münster

W–L
4–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,271
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
4–5
Results from the ten most recent rating-eligible matches.
Opponents
7
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
1
Bronze
0
Total medals
2
Events with results
3

Full career record

Wins
4
Losses
5
Matches
9
Win rate
44.4%

Ways of winning

Submission
1
Points
3
Decision
0
Disqualification
0

Personal records

Longest winning streak
3
Longest submission streak
1
Longest gold streak
1

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
7
Distinct events
3

Ways of winning

  • Submission 1 25%
  • Points 3 75%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1271
Record
4–5
Win rate
44%
Submission share
25%

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
1,271
Change over 90 days
+42
Highest rating in 12 months
1,255
Performance versus expectation
-5.0 pp
Schedule strength
Top 22%
Average opponent rating
1,368
Weighted win rate
42%
Expected win rate
47%
Repeat-opponent share
22%
Effective evidence
5.8
Confidence
75/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 2–1 2–1 across 3 rematches against 1 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #275 Theo Lentfer · 2025 AGF Bremen Championships Pts 8–4 Earlier · Sub 00:35 0–0 September 13, 2025 · 2025 AGF Bremen Championships
  2. #814 Issa Rahimi · 2026 AGF Bremen Championships Pts 10–5
  3. #1362 Jawad Anani · King Tatami - BJJ Gi Kids Pro Pts 12–0

Full career

  1. #275 Theo Lentfer · 2025 AGF Bremen Championships Pts 8–4 Earlier · Sub 00:35 0–0 September 13, 2025 · 2025 AGF Bremen Championships
  2. #814 Issa Rahimi · 2026 AGF Bremen Championships Pts 10–5
  3. #1362 Jawad Anani · King Tatami - BJJ Gi Kids Pro Pts 12–0

Rivals

Opponent Head-to-head record Matches
Theo Lentfer 2–1 3

Around this athlete

Athlete Rank Rating
Leo Steinmeier #1026 1,271
Robert Rafail Koukaras #1027 1,271
Sohaib Bailiche #1028 1,270

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 Change +6 Rating 1,271

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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 -4 Rating 1,265

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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 0 Rating 1,269

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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 No new matches Change +2 Rating 1,269

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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.

April 2026 No new matches Change +10 Rating 1,267

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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.

March 2026 No new matches Change +2 Rating 1,257

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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.

February 2026 2 new matches Change +24 Rating 1,255

Rating-period composition

Rating matches
9 +2
Record
4–5 Previous month 3–4
Opponents
7 +2
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
February 21, 2026 Muhammad Magomadov
2026 AGF Bremen Championships Gi Kids / Boys / Kids (8 - 9 yrs) / Gray / Feather I (Up to 29.50 kg)
Method Submission 00:46 0–5
Marginal influence -13
Win
February 21, 2026 Issa Rahimi
2026 AGF Bremen Championships Gi Kids / Boys / Kids (8 - 9 yrs) / Gray / Feather I (Up to 29.50 kg)
Method Points 03:00 10–5
Marginal influence +35
January 2026 No new matches Change +2 Rating 1,231

Rating-period composition

Rating matches
7 0
Record
3–4 Previous month 3–4
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 No new matches Change +1 Rating 1,229

Rating-period composition

Rating matches
7 0
Record
3–4 Previous month 3–4
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.

November 2025 No new matches Change +16 Rating 1,228

Rating-period composition

Rating matches
7 0
Record
3–4 Previous month 3–4
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.

October 2025 No new matches Change -1 Rating 1,212

Rating-period composition

Rating matches
7 0
Record
3–4 Previous month 3–4
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.

September 2025 7 new matches Change Starting point Rating 1,213

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 27, 2025 Oleksandr Yeromenko
King Tatami - BJJ Gi Kids Pro Boys Gi / 8-9 Jahre/Years / -27 kg
Method Disqualification 01:46 2–0
Marginal influence -28
Loss
September 27, 2025 Maximilian Jurk
King Tatami - BJJ Gi Kids Pro Boys Gi / 8-9 Jahre/Years / -27 kg
Method Points 03:00 0–10
Marginal influence -19
Loss
September 27, 2025 Alvar Thomä
King Tatami - BJJ Gi Kids Pro Boys Gi / 8-9 Jahre/Years / -27 kg
Method Points 03:00 0–0
Marginal influence -22
Win
September 27, 2025 Jawad Anani
King Tatami - BJJ Gi Kids Pro Boys Gi / 8-9 Jahre/Years / -27 kg
Method Points 03:00 12–0
Marginal influence +21
Win
September 13, 2025 Theo Lentfer
2025 AGF Bremen Championships Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
Method Points 02:00 8–4
Marginal influence +20
Win
September 13, 2025 Theo Lentfer
2025 AGF Bremen Championships Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
Method Submission 00:35 0–0
Marginal influence +20
Loss
September 13, 2025 Theo Lentfer
2025 AGF Bremen Championships Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
Method Points 02:00 1–2
Marginal influence -14
Relevant matches
5.8
Official ranking percentile
Top 69%
Performance
5.0 pp below expectation

5.8 weighted matches against 7 different opponents across 3 events

Weighted win rate
41.6%
Expected win rate
46.6%
Average opponent rating
1,368
Repeated-opponent share
22.2%
Network connectivity
87.6%

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 1 event vote Selected outcome

Registrations and outcomes

2026 AGF Bremen Championships
U10 · Counts
Gi Kids / Boys / Kids (8 - 9 yrs) / Gray / Feather I (Up to 29.50 kg)
  • Competition age 9
  • Registered age: u10
  • Source category: u10
Competition T-shirt / Youth Small
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / Grey / 8-9 years / -27 kg
  • Competition age 8
  • Registered age: u10
  • Source category: u10
FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / Grey / 8-9 years / -27 kg
  • Competition age 8
  • Registered age: u10
  • Source category: u10
King Tatami - BJJ Gi Kids Pro
Does not count
Boys Gi / 8-9 Jahre/Years / -27 kg
  • Competition age 8
  • Registered age: u10
  • Source category: u10
2025 AGF Bremen Championships
Does not count
Competition T-shirt / Youth Small
Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
  • Competition age 8
  • Registered age: u8
  • Source category: u8

Classification evidence

Why ≤ 25 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

  • ≤ 25 kg 1 competition event Selected outcome
  • ≤ 27 kg 1 competition event
  • ≤ 30 kg 1 competition event

Registrations and outcomes

2026 AGF Bremen Championships
≤ 30 kg · Counts as a competition event
Gi Kids / Boys / Kids (8 - 9 yrs) / Gray / Feather I (Up to 29.50 kg)
  • Registered weight class: Feather I (Up to 29.50 kg)
  • Source competition limit: Feather I (Up to 29.50 kg)

2 matches in the rating period

2026 AGF Bremen Championships
Does not count
Competition T-shirt / Youth Small

No matches in the rating period · no valid weight evidence

HANNOVER WINTER OPEN 2025 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / Grey / 8-9 years / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

No matches in the rating period · no valid weight evidence

FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / Grey / 8-9 years / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

No matches in the rating period · no valid weight evidence

King Tatami - BJJ Gi Kids Pro
≤ 27 kg · Counts as a competition event
Boys Gi / 8-9 Jahre/Years / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

4 matches in the rating period

2025 AGF Bremen Championships
Does not count
Competition T-shirt / Youth Small

No matches in the rating period · no valid weight evidence

2025 AGF Bremen Championships
≤ 25 kg · Counts as a competition event
Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
  • Registered weight class: Rooster III (Up to 24.94 kg)
  • Source competition limit: Rooster III (Up to 24.94 kg)

3 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 5 matches in the rating period Selected outcome

Registrations and outcomes

2026 AGF Bremen Championships
grey · Counts as a match
Gi Kids / Boys / Kids (8 - 9 yrs) / Gray / Feather I (Up to 29.50 kg)
  • Source belt category: grey

2 matches in the rating period

2025 AGF Bremen Championships
grey · Counts as a match
Gi Kids / Boys / Little Kids (6 - 7 yrs) / Gray / Rooster III (Up to 24.94 kg)
  • Source belt category: grey

3 matches in the rating period