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Tibbe Den Boef

Ruthless Fight Company

W–L
7–13
Won and lost rating-eligible matches in the past 12 months.
Gi
1,209
Rating based on Gi matches in the past 12 months.
No-Gi
1,304
Rating based on No-Gi matches in the past 12 months.
Current form
3–7
Results from the ten most recent rating-eligible matches.
Opponents
11
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
6
Bronze
5
Total medals
12
Events with results
6

Full career record

Wins
14
Losses
16
Matches
30
Win rate
46.7%

Ways of winning

Submission
7
Points
3
Decision
1
Disqualification
0

Personal records

Longest winning streak
2
Longest submission streak
1

Recent recorded placements

  2. 2026 AGF Netherlands Championships

    NL Event record 3–5

    • Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
    • Place 4
    • Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
    • No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
11
Distinct events
4

Ways of winning

  • Submission 5 71%
  • Points 1 14%
  • Decision 1 14%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1209
Record
2–7
Win rate
22%
Submission share
50%

No-Gi

Rating
1304
Record
5–6
Win rate
45%
Submission share
80%

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
1,326
Change over 90 days
-32
Highest rating in 12 months
1,376
Performance versus expectation
+0.4 pp
Schedule strength
Top 3%
Average opponent rating
1,438
Weighted win rate
38%
Expected win rate
37%
Repeat-opponent share
45%
Effective evidence
14.3
Confidence
92/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 6–13 6–13 across 19 rematches against 8 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #143 Lennox Eugster · 2026 AGF Netherlands Championships Sub 00:30 0–2
  2. #809 Frits Van Est · 2026 AGF Netherlands Championships Pts 12–0
  3. #835 Dellano Van Kiel · The Future League 9 - Gi & NoGi Sub 02:53 0–0
  4. #844 Thomas Peeks · GrappleCity: Rotterdam Winter Open Sub 01:44 0–2
  5. #847 Alexander Klak · GrappleCity: Rotterdam Winter Open Sub 01:13 0–2 Earlier · Dec 0–0 November 9, 2025 · GrappleCity: Rotterdam Winter Open

Full career

  1. #143 Lennox Eugster · 2026 AGF Netherlands Championships Sub 00:30 0–2
  2. #177 Noya De Levie · NAGA Amsterdam Grappling Championship Pts 2–0
  3. #541 Sam Van Den Top · Lion Cub Jiu Jitsu Competition 4 Sub 00:25 0–0
  4. #809 Frits Van Est · 2026 AGF Netherlands Championships Pts 12–0
  5. #835 Dellano Van Kiel · The Future League 9 - Gi & NoGi Sub 02:53 0–0
  6. #844 Thomas Peeks · GrappleCity: Rotterdam Winter Open Sub 01:44 0–2
  7. #847 Alexander Klak · GrappleCity: Rotterdam Winter Open Sub 01:13 0–2 Earlier · Dec 0–0 November 9, 2025 · GrappleCity: Rotterdam Winter Open
  8. #1469 Anas Ouriaghli · Lion Cub Jiu Jitsu Competition 4 Pts 11–6

Rivals

Opponent Head-to-head record Matches
Euan Besems 0–4 4
Frits Van Est 1–2 3
Alexander Klak 2–0 2

Around this athlete

Athlete Rank Rating
Emma Ott #767 1,326
Tibbe Den Boef #768 1,326
Issa Hassime #769 1,326

Scheduled

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 · 4 left period Change -22 Rating 1,326

Rating-period composition

Rating matches
20 -4
Record
7–13 Previous month 9–15
Opponents
11 -4
Events
4 -1

4 older matches left the 12-month period: 2 won and 2 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 0 Rating 1,348

Rating-period composition

Rating matches
24 0
Record
9–15 Previous month 9–15
Opponents
15 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 +4 Rating 1,348

Rating-period composition

Rating matches
24 0
Record
9–15 Previous month 9–15
Opponents
15 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 3 new matches Change +19 Rating 1,344

Rating-period composition

Rating matches
24 +3
Record
9–15 Previous month 8–13
Opponents
15 +1
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
May 23, 2026 Euan Besems
GrappleCity: Rotterdam Summer Open Teens Gi / Grey / 12-13 years / -50kg / Boy
Method Submission 01:53 0–0
Marginal influence -4
Win
May 23, 2026 Adam Machmoedov
GrappleCity: Rotterdam Summer Open Teens Gi / Grey / 12-13 years / -50kg / Boy
Method Submission 01:46 9–0
Marginal influence +11
Loss
May 23, 2026 Euan Besems
GrappleCity: Rotterdam Summer Open Teens NoGi / Grey / 12-13 years / -50kg / Boy
Method Submission 02:45 0–6
Marginal influence -4
April 2026 7 new matches · 3 left period Change -42 Rating 1,325

Rating-period composition

Rating matches
21 +4
Record
8–13 Previous month 8–9
Opponents
14 +1
Events
4 0

3 older matches left the 12-month period: 2 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

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 Frits Van Est
2026 AGF Netherlands Championships No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
Method Points 03:00 12–0
Marginal influence +11
Win
April 18, 2026 Lennox Eugster
2026 AGF Netherlands Championships No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
Method Submission 00:30 0–2
Marginal influence +16
Loss
April 18, 2026 Muhammad Sakaev
2026 AGF Netherlands Championships No Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
Method Submission 02:13 2–6
Marginal influence -8
Loss
April 18, 2026 Rayan Mouhdad
2026 AGF Netherlands Championships No Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
Method Submission 01:31 4–4
Marginal influence -6
Loss
April 18, 2026 Rayan Mouhdad
2026 AGF Netherlands Championships Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
Method Submission 00:52 2–0
Marginal influence -6
Loss
April 18, 2026 Frits Van Est
2026 AGF Netherlands Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
Method Points 03:00 0–1
Marginal influence -10
Loss
April 18, 2026 Frits Van Est
2026 AGF Netherlands Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
Method Points 03:00 0–4
Marginal influence -10
March 2026 5 new matches Change -10 Rating 1,367

Rating-period composition

Rating matches
17 +5
Record
8–9 Previous month 7–5
Opponents
13 +3
Events
4 +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
March 22, 2026 Noah Liberato
The Future League 9 - Gi & NoGi Gi - 44
Method Submission 02:48 0–11
Marginal influence -9
Loss
March 22, 2026 Kivanc Uygun
The Future League 9 - Gi & NoGi Gi - 44
Method Points 03:00 0–0
Marginal influence -10
Loss
March 22, 2026 Kivanc Uygun
The Future League 9 - Gi & NoGi NoGi - 13
Method Points 03:00 5–8
Marginal influence -12
Win
March 22, 2026 Dellano Van Kiel
The Future League 9 - Gi & NoGi NoGi - 13
Method Submission 02:53 0–0
Marginal influence +14
Loss
March 22, 2026 Noah Liberato
The Future League 9 - Gi & NoGi NoGi - 13
Method Submission 01:44 0–5
Marginal influence -8
February 2026 No new matches Change +2 Rating 1,377

Rating-period composition

Rating matches
12 0
Record
7–5 Previous month 7–5
Opponents
10 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.

January 2026 No new matches Change -1 Rating 1,375

Rating-period composition

Rating matches
12 0
Record
7–5 Previous month 7–5
Opponents
10 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.

December 2025 No new matches Change 0 Rating 1,376

Rating-period composition

Rating matches
12 0
Record
7–5 Previous month 7–5
Opponents
10 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.

November 2025 5 new matches Change +42 Rating 1,376

Rating-period composition

Rating matches
12 +5
Record
7–5 Previous month 4–3
Opponents
10 +3
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.
Win
November 9, 2025 Alexander Klak
GrappleCity: Rotterdam Winter Open Kids NoGi / Grey / Kids 10-11 years / -45kg
Method Submission 01:13 0–2
Marginal influence +8
Loss
November 9, 2025 Euan Besems
GrappleCity: Rotterdam Winter Open Kids NoGi / Grey / Kids 10-11 years / -45kg
Method Points 03:00 0–6
Marginal influence -3
Win
November 9, 2025 Thomas Peeks
GrappleCity: Rotterdam Winter Open Kids NoGi / Grey / Kids 10-11 years / -45kg
Method Submission 01:44 0–2
Marginal influence +13
Win
November 9, 2025 Alexander Klak
GrappleCity: Rotterdam Winter Open Kids Gi / Grey / Kids 10-11 years / -45kg
Method Decision 0–0
Marginal influence +13
Loss
November 9, 2025 Euan Besems
GrappleCity: Rotterdam Winter Open Kids Gi / Grey / Kids 10-11 years / -45kg
Method Points 03:00 0–9
Marginal influence -4
October 2025 No new matches Change -3 Rating 1,334

Rating-period composition

Rating matches
7 0
Record
4–3 Previous month 4–3
Opponents
7 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 No new matches Change -7 Rating 1,337

Rating-period composition

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

Relevant matches
14.3
Official ranking percentile
Top 52%
Performance
0.4 pp above expectation

14.3 weighted matches against 11 different opponents across 4 events

Weighted win rate
37.8%
Expected win rate
37.5%
Average opponent rating
1,438
Repeated-opponent share
45.0%
Network connectivity
87.6%

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

GrappleCity: Rotterdam Summer Open
U14 · Counts
Teens NoGi / Grey / 12-13 years / -50kg / Boy
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Teens Gi / Grey / 12-13 years / -50kg / Boy
  • Competition age 12
  • Registered age: u14
  • Source category: u14
2026 AGF Netherlands Championships
U14 · Counts
No Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
  • Competition age 12
  • Registered age: u16
  • Source category: u16
No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
  • Competition age 12
  • Registered age: u16
  • Source category: u16
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Competition age 12
  • Registered age: u12
  • Source category: u12
The Future League 9 - Gi & NoGi
U14 · Counts
Gi - 44
  • Competition age 12
  • Registered age: u14
  • Source category: u14
NoGi - 13
  • Competition age 12
  • Registered age: u14
  • Source category: u14
GrappleCity: Rotterdam Winter Open
Does not count
Kids NoGi / Grey / Kids 10-11 years / -45kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Kids Gi / Grey / Kids 10-11 years / -45kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 45 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

  • ≤ 45 kg 1 competition event Selected outcome
  • ≤ 48 kg 1 competition event
  • ≤ 50 kg 1 competition event

Registrations and outcomes

GrappleCity: Rotterdam Summer Open
≤ 50 kg · Counts as a competition event
Teens NoGi / Grey / 12-13 years / -50kg / Boy
  • Registered weight class: -50kg
  • Source competition limit: -50kg

1 match in the rating period

GrappleCity: Rotterdam Summer Open
≤ 50 kg · Counts as a competition event
Teens Gi / Grey / 12-13 years / -50kg / Boy
  • Registered weight class: -50kg
  • Source competition limit: -50kg

2 matches in the rating period

2026 AGF Netherlands Championships
≤ 48 kg · Counts as a competition event
No Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
  • Registered weight class: Light II (Up to 47.60 kg)
  • Source competition limit: Light II (Up to 47.60 kg)

2 matches in the rating period

2026 AGF Netherlands Championships
≤ 48 kg · Counts as a competition event
No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Registered weight class: Light II (Up to 47.60 kg)
  • Source competition limit: Light II (Up to 47.60 kg)

2 matches in the rating period

2026 AGF Netherlands Championships
≤ 48 kg · Counts as a competition event
Gi Kids Challenger / Boys / Regular Challenger / Light II (Up to 47.60 kg)
  • Registered weight class: Light II (Up to 47.60 kg)
  • Source competition limit: Light II (Up to 47.60 kg)

1 match in the rating period

2026 AGF Netherlands Championships
≤ 48 kg · Counts as a competition event
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Registered weight class: Light II (Up to 47.60 kg)
  • Source competition limit: Light II (Up to 47.60 kg)

2 matches in the rating period

The Future League 9 - Gi & NoGi
Does not count
Gi - 44

2 matches in the rating period · weight class could not be normalized reliably

The Future League 9 - Gi & NoGi
Does not count
NoGi - 13

3 matches in the rating period · weight class could not be normalized reliably

GrappleCity: Rotterdam Winter Open
≤ 45 kg · Counts as a competition event
Kids NoGi / Grey / Kids 10-11 years / -45kg
  • Registered weight class: -45kg
  • Source competition limit: -45kg

3 matches in the rating period

GrappleCity: Rotterdam Winter Open
≤ 45 kg · Counts as a competition event
Kids Gi / Grey / Kids 10-11 years / -45kg
  • Registered weight class: -45kg
  • Source competition limit: -45kg

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 12 matches in the rating period Selected outcome

Registrations and outcomes

GrappleCity: Rotterdam Summer Open
grey · Counts as a match
Teens Gi / Grey / 12-13 years / -50kg / Boy
  • Source belt category: grey

2 matches in the rating period

GrappleCity: Rotterdam Summer Open
grey · Counts as a match
Teens NoGi / Grey / 12-13 years / -50kg / Boy
  • Source belt category: grey

1 match in the rating period

2026 AGF Netherlands Championships
grey · Counts as a match
No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Source belt category: grey

2 matches in the rating period

2026 AGF Netherlands Championships
grey · Counts as a match
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Gray / Light II (Up to 47.60 kg)
  • Source belt category: grey

2 matches in the rating period

GrappleCity: Rotterdam Winter Open
grey · Counts as a match
Kids NoGi / Grey / Kids 10-11 years / -45kg
  • Source belt category: grey

3 matches in the rating period

GrappleCity: Rotterdam Winter Open
grey · Counts as a match
Kids Gi / Grey / Kids 10-11 years / -45kg
  • Source belt category: grey

2 matches in the rating period