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Iven Maas

TeamXtreme

W–L
1–13
Won and lost rating-eligible matches in the past 12 months.
Gi
1,052
Rating based on Gi matches in the past 12 months.
No-Gi
1,127
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.

Honours

Medals and placements

Gold
0
Silver
0
Bronze
4
Total medals
4
Events with results
3

Full career record

Wins
2
Losses
13
Matches
15
Win rate
13.3%

Ways of winning

Submission
0
Points
1
Decision
0
Disqualification
0

Personal records

Longest winning streak
1

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
9
Distinct events
3

Ways of winning

  • Submission 0 0%
  • Points 1 100%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1052
Record
0–7
Win rate
0%
Submission share
-

No-Gi

Rating
1127
Record
1–6
Win rate
14%
Submission share
0%

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
1,162
Change over 90 days
-22
Highest rating in 12 months
1,181
Performance versus expectation
-21.8 pp
Schedule strength
Top 14%
Average opponent rating
1,389
Weighted win rate
7%
Expected win rate
29%
Repeat-opponent share
36%
Effective evidence
10.8
Confidence
90/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 1–8 1–8 across 9 rematches against 4 repeat opponents.

Rivals

Opponent Head-to-head record Matches
Amar Musa Taleh 0–2 2
Malik Boui 1–1 2

Around this athlete

Athlete Rank Rating
Liam Henry Pöwe #1382 1,163
Iven Maas #1383 1,162
Mu'awiyah Bajelan #1384 1,161

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 0 Rating 1,162

Rating-period composition

Rating matches
14 0
Record
1–13 Previous month 1–13
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 +3 Rating 1,162

Rating-period composition

Rating matches
14 0
Record
1–13 Previous month 1–13
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 4 new matches Change -19 Rating 1,159

Rating-period composition

Rating matches
14 +4
Record
1–13 Previous month 1–9
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
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / White / 8-9 years / -27 kg
Method Submission 01:03 0–3
Marginal influence -4
Loss
June 27, 2026 Zubayr Türkmen
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / White / 8-9 years / -27 kg
Method Submission 00:18 0–2
Marginal influence -9
Loss
June 27, 2026 Zubayr Türkmen
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / White / 8-9 years / -27 kg
Method Submission 01:05 0–2
Marginal influence -6
Loss
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / White / 8-9 years / -27 kg
Method Submission 02:24 0–9
Marginal influence -8
May 2026 No new matches Change +4 Rating 1,178

Rating-period composition

Rating matches
10 0
Record
1–9 Previous month 1–9
Opponents
8 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 6 new matches Change -16 Rating 1,174

Rating-period composition

Rating matches
10 +6
Record
1–9 Previous month 0–4
Opponents
8 +4
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
April 18, 2026 Malik Boui
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Points 03:00 6–6
Marginal influence +20
Loss
April 18, 2026 Abdullah Musajev
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Submission 00:27 0–6
Marginal influence -4
Loss
April 18, 2026 Malik Boui
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Points 04:00 0–30
Marginal influence -11
Loss
April 18, 2026 Amar Musa Taleh
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Points 04:00 2–9
Marginal influence -8
Loss
April 18, 2026 Collin Rehburg
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Points 04:00 4–11
Marginal influence -14
Loss
April 18, 2026 Amar Musa Taleh
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
Method Submission 00:22 0–2
Marginal influence -7
March 2026 No new matches Change +9 Rating 1,190

Rating-period composition

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

February 2026 4 new matches Change Starting point Rating 1,181

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 28, 2026 Hamza Yildiz
2026 AGF Dusseldorf Championships No Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
Method Points 03:00 2–16
Marginal influence -7
Loss
February 28, 2026 Robert Lee Gemmecker
2026 AGF Dusseldorf Championships No Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
Method Points 03:00 1–9
Marginal influence -4
Loss
February 28, 2026 Atilla Bozkurt
2026 AGF Dusseldorf Championships Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
Method Points 03:00 0–1
Marginal influence -13
Loss
February 28, 2026 Lorenzo Santamaria
2026 AGF Dusseldorf Championships Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
Method Points 03:00 11–13
Marginal influence -11
Relevant matches
10.8
Official ranking percentile
Top 93%
Performance
21.8 pp below expectation

10.8 weighted matches against 9 different opponents across 3 events

Weighted win rate
7.3%
Expected win rate
29.1%
Average opponent rating
1,389
Repeated-opponent share
35.7%
Network connectivity
87.6%

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 3 event votes Selected outcome

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
U12 · Counts
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Competition age 10
  • Registered age: u10
  • Source category: u10
Boys Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Competition age 10
  • Registered age: u10
  • Source category: u10
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U12 · Counts
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Competition age 10
  • Registered age: u10
  • Source category: u10
Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Competition age 10
  • Registered age: u10
  • Source category: u10
2026 AGF Dusseldorf Championships
U12 · Counts
No Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
  • Competition age 10
  • Registered age: u10
  • Source category: u10
Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
  • Competition age 10
  • Registered age: u10
  • Source category: u10
2025 AGF Saarbrucken Open
Does not count
Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
  • Competition age 9
  • Registered age: u10
  • Source category: u10

Classification evidence

Why ≤ 27 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

  • ≤ 27 kg 1 competition event Selected outcome
  • ≤ 30 kg 2 competition events

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 27 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 27 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 30 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Registered weight class: -30 kg
  • Source competition limit: -30 kg

3 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 30 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Registered weight class: -30 kg
  • Source competition limit: -30 kg

3 matches in the rating period

2026 AGF Dusseldorf Championships
≤ 30 kg · Counts as a competition event
No Gi Kids / Boys / Kids (8 - 9 yrs) / White / 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 Dusseldorf Championships
≤ 30 kg · Counts as a competition event
Gi Kids / Boys / Kids (8 - 9 yrs) / White / 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

2025 AGF Saarbrucken Open
Does not count
Gi Kids / Boys / Kids (8 - 9 yrs) / White / 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)

No matches in the rating period · no valid weight evidence

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 14 matches in the rating period Selected outcome

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
white · Counts as a match
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Source belt category: white

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
white · Counts as a match
Boys Gi (under 16 y.o.) / White / 8-9 years / -27 kg
  • Source belt category: white

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
white · Counts as a match
Boys No-Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Source belt category: white

3 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
white · Counts as a match
Boys Gi (under 16 y.o.) / White / 8-9 years / -30 kg
  • Source belt category: white

3 matches in the rating period

2026 AGF Dusseldorf Championships
white · Counts as a match
No Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather I (Up to 29.50 kg)
  • Source belt category: white

2 matches in the rating period

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

2 matches in the rating period