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Jona Yeboah

Renzo Gracie Holland

W–L
4–0
Won and lost rating-eligible matches in the past 12 months.
Gi
1,306
Rating based on Gi matches in the past 12 months.
No-Gi
1,316
Rating based on No-Gi matches in the past 12 months.
Current form
4–0
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

10
Indexed competition matches
Date Opponent Result Event Division
2025-11-09 Samuel Harmsen
Win
GrappleCity: Rotterdam Winter Open No-Gi · Teens NoGi / White / 14-15 years / -75kg / Boy
2025-11-09 Erwin De Jong
Win
GrappleCity: Rotterdam Winter Open No-Gi · Teens NoGi / White / 14-15 years / -75kg / Boy
2025-09-21 Muhammed Yildizli
Win
'The Future League 7' by VERSUS Gi · 70+kg / 15yr / White
2025-09-21 Boris Gurov
Win
'The Future League 7' by VERSUS Gi · 70+kg / 15yr / White
2025-08-02 Nykyta Tymofeiev
Loss
Grappling Industries AMSTERDAM No-Gi · No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -170 lbs
2025-08-02 Oumar José
Win
Grappling Industries AMSTERDAM No-Gi · No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -170 lbs
2025-08-02 Oumar José
Win
Grappling Industries AMSTERDAM Gi · Gi Kids / White / 14 - 15 years (Male) / -170 lbs
2025-08-02 Nykyta Tymofeiev
Win
Grappling Industries AMSTERDAM Gi · Gi Kids / White / 14 - 15 years (Male) / -170 lbs
2025-05-25 Oumar José
Win
'The Future League 6' by VERSUS Gi · 14 - 15 years / Boys / White / +70 kg
2025-05-25 Muhammed Yildizli
Win
'The Future League 6' by VERSUS Gi · 14 - 15 years / Boys / White / +70 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 · 3 left period Change -55 Rating 1,398

Rating-period composition

Rating matches
4 -3
Record
4–0 Previous month 6–1
Opponents
4 -2
Events
2 -1

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.

July 2026 No new matches Change +3 Rating 1,453

Rating-period composition

Rating matches
7 0
Record
6–1 Previous month 6–1
Opponents
6 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 -2 Rating 1,450

Rating-period composition

Rating matches
7 0
Record
6–1 Previous month 6–1
Opponents
6 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 · 2 left period Change -20 Rating 1,452

Rating-period composition

Rating matches
7 -2
Record
6–1 Previous month 8–1
Opponents
6 0
Events
3 -1

2 older matches left the 12-month period: 2 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

April 2026 No new matches Change 0 Rating 1,472

Rating-period composition

Rating matches
9 0
Record
8–1 Previous month 8–1
Opponents
6 0
Events
4 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 +6 Rating 1,472

Rating-period composition

Rating matches
9 0
Record
8–1 Previous month 8–1
Opponents
6 0
Events
4 0

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

February 2026 No new matches Change 0 Rating 1,466

Rating-period composition

Rating matches
9 0
Record
8–1 Previous month 8–1
Opponents
6 0
Events
4 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 +3 Rating 1,466

Rating-period composition

Rating matches
9 0
Record
8–1 Previous month 8–1
Opponents
6 0
Events
4 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 1,463

Rating-period composition

Rating matches
9 0
Record
8–1 Previous month 8–1
Opponents
6 0
Events
4 0

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

November 2025 2 new matches Change +36 Rating 1,463

Rating-period composition

Rating matches
9 +2
Record
8–1 Previous month 6–1
Opponents
6 +2
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.
Win
November 9, 2025 Samuel Harmsen
GrappleCity: Rotterdam Winter Open Teens NoGi / White / 14-15 years / -75kg / Boy
Method Points 04:00 9–0
Marginal influence +18
Win
November 9, 2025 Erwin De Jong
GrappleCity: Rotterdam Winter Open Teens NoGi / White / 14-15 years / -75kg / Boy
Method Submission 01:45 6–0
Marginal influence +15
October 2025 No new matches Change 0 Rating 1,427

Rating-period composition

Rating matches
7 0
Record
6–1 Previous month 6–1
Opponents
4 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.

September 2025 2 new matches Change +47 Rating 1,427

Rating-period composition

Rating matches
7 +2
Record
6–1 Previous month 4–1
Opponents
4 +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.
Win
September 21, 2025 Muhammed Yildizli
'The Future League 7' by VERSUS 70+kg / 15yr / White
Method Points 04:00 6–4
Marginal influence +9
Win
September 21, 2025 Boris Gurov
'The Future League 7' by VERSUS 70+kg / 15yr / White
Method Points 04:00 2–2
Marginal influence +18
Relevant matches
3.4
Official ranking percentile
-
Performance
-

3.4 weighted matches against 4 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,254
Repeated-opponent share
0.0%
Network connectivity
87.6%

Classification evidence

Why U18?

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

  • U18 13 event votes Selected outcome

Registrations and outcomes

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U18 · Counts
Boys Absolute / Gi Division (under 16 y.o.)
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Boys Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Boys No-Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
GrappleCity: Rotterdam Summer Open
U18 · Counts
Teens NoGi / White / 14-15 years / -80kg / Boy
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Teens Gi / White / 14-15 years / -80kg / Boy
  • Competition age 16
  • Registered age: u16
  • Source category: u16
2026 AGF Belgium Championships
U18 · Counts
No Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Competition age 16
  • Registered age: u16
  • Source category: u16
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
U18 · Counts
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / +75kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / + 75kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Grappling Industries AMSTERDAM
U18 · Counts
Gi Kids / 14 - 15 years (Male) / White / -185 lbs
  • Competition age 16
  • Registered age: u16
  • Source category: u16
No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -185 lbs
  • Competition age 16
  • Registered age: u16
  • Source category: u16
NAGA Brussels Grappling Championship
U18 · Counts
Teens Gi (Male) / Beginner / 85 - 89.9 / 14-15 years
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Teens No-Gi (Male) / Beginner / 80 - 84.9 / 14-15 years
  • Competition age 16
  • Registered age: u16
  • Source category: u16
2026 AGF Netherlands Championships
U18 · Counts
No Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Competition age 16
  • Registered age: u16
  • Source category: u16
The Future League 9 - Gi & NoGi
U18 · Counts
Kids Gi / 13 - 15 years boys / White / +70 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Kids Grappling (NoGi) / 13 - 15 years boys / White / +70 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
U18 · Counts
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / + 75kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / +75kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older)
U18 · Counts
Teens Gi (Male) / Beginner / 75 - 79.9 / 14-15 years
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Teens No-Gi (Male) / Beginner / 75 - 79.9 / 14-15 years
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Grappling Industries AMSTERDAM
U18 · Counts
Gi Kids / 14 - 15 years (Male) / White / -170 lbs
  • Competition age 16
  • Registered age: u16
  • Source category: u16
No Gi Kids / 14 - 15 years (Male) / Beginner (White and Grey) / -170 lbs
  • Competition age 16
  • Registered age: u16
  • Source category: u16
GrappleCity: Rotterdam Spring Open
U18 · Counts
Teens Gi / White / 14-15 years / -75kg / Boy
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Teens NoGi / White / 14-15 years / -75kg / Boy
  • Competition age 16
  • Registered age: u16
  • Source category: u16
COLOGNE WINTER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U18 · Counts
Boys Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
Boys No-Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Competition age 16
  • Registered age: u16
  • Source category: u16
INTERCLUB GRAPPLING VLAANDEREN - NO GI - 06/12
Does not count
Boys Youth NoGi / White & Grey / 13-15 / -79,3 kg (Medium heavy)
  • Competition age 15
The Future League 8 – Gi & No-Gi
Does not count
Kids Gi / 13 - 15 years boys / White / +70 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Kids Grappling (NoGi) / 13 - 15 years boys / White / +70 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Grappling Industries BRUSSELS
Does not count
No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -170 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Gi Kids / White / 14 - 15 years (Male) / -170 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
GrappleCity: Rotterdam Winter Open
Does not count
Teens NoGi / White / 14-15 years / -75kg / Boy
  • Competition age 15
  • Registered age: u16
  • Source category: u16
'The Future League 7' by VERSUS
Does not count
70+kg / 15yr / White
  • Competition age 15
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 75 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

  • ≤ 75 kg 1 competition event Selected outcome

Registrations and outcomes

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys Absolute / Gi Division (under 16 y.o.)
  • Registered weight class: Boys Absolute
  • Source competition limit: Boys Absolute

No matches in the rating period · no valid weight evidence

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Registered weight class: -84 kg
  • Source competition limit: -84 kg

No matches in the rating period · no valid weight evidence

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys No-Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Registered weight class: -84 kg
  • Source competition limit: -84 kg

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Summer Open
Does not count
Teens NoGi / White / 14-15 years / -80kg / Boy
  • Registered weight class: -80kg
  • Source competition limit: -80kg

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Summer Open
Does not count
Teens Gi / White / 14-15 years / -80kg / Boy
  • Registered weight class: -80kg
  • Source competition limit: -80kg

No matches in the rating period · no valid weight evidence

2026 AGF Belgium Championships
Does not count
No Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Registered weight class: Heavy II (Up to 999.00 kg)
  • Source competition limit: Heavy II (Up to 999.00 kg)

No matches in the rating period · no valid weight evidence

2026 AGF Belgium Championships
Does not count
Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Registered weight class: Heavy II (Up to 999.00 kg)
  • Source competition limit: Heavy II (Up to 999.00 kg)

No matches in the rating period · no valid weight evidence

OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
Does not count
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / +75kg
  • Registered weight class: +75kg
  • Source competition limit: +75kg

No matches in the rating period · no valid weight evidence

OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
Does not count
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / + 75kg
  • Registered weight class: + 75kg
  • Source competition limit: + 75kg

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
Gi Kids / 14 - 15 years (Male) / White / -185 lbs
  • Registered weight class: -185 lbs
  • Source competition limit: -185 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -185 lbs
  • Registered weight class: -185 lbs
  • Source competition limit: -185 lbs

No matches in the rating period · no valid weight evidence

NAGA Brussels Grappling Championship
Does not count
Teens Gi (Male) / Beginner / 85 - 89.9 / 14-15 years
  • Registered weight class: 85 - 89.9
  • Source competition limit: 85 - 89.9

No matches in the rating period · no valid weight evidence

NAGA Brussels Grappling Championship
Does not count
Teens No-Gi (Male) / Beginner / 80 - 84.9 / 14-15 years
  • Registered weight class: 80 - 84.9
  • Source competition limit: 80 - 84.9

No matches in the rating period · no valid weight evidence

2026 AGF Netherlands Championships
Does not count
No Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Registered weight class: Heavy II (Up to 999.00 kg)
  • Source competition limit: Heavy II (Up to 999.00 kg)

No matches in the rating period · no valid weight evidence

2026 AGF Netherlands Championships
Does not count
Gi Kids / Boys / Teen (14 - 15 yrs) / White / Heavy II (Up to 999.00 kg)
  • Registered weight class: Heavy II (Up to 999.00 kg)
  • Source competition limit: Heavy II (Up to 999.00 kg)

No matches in the rating period · no valid weight evidence

The Future League 9 - Gi & NoGi
Does not count
Kids Gi / 13 - 15 years boys / White / +70 kg
  • Registered weight class: +70 kg
  • Source competition limit: +70 kg

No matches in the rating period · no valid weight evidence

The Future League 9 - Gi & NoGi
Does not count
Kids Grappling (NoGi) / 13 - 15 years boys / White / +70 kg
  • Registered weight class: +70 kg
  • Source competition limit: +70 kg

No matches in the rating period · no valid weight evidence

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
Does not count
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / + 75kg
  • Registered weight class: + 75kg
  • Source competition limit: + 75kg

No matches in the rating period · no valid weight evidence

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
Does not count
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / +75kg
  • Registered weight class: +75kg
  • Source competition limit: +75kg

No matches in the rating period · no valid weight evidence

NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older)
Does not count
Teens Gi (Male) / Beginner / 75 - 79.9 / 14-15 years
  • Registered weight class: 75 - 79.9
  • Source competition limit: 75 - 79.9

No matches in the rating period · no valid weight evidence

NAGA Paris Grappling Championship - Children 17 years & under / Adult Men (30 years & older)
Does not count
Teens No-Gi (Male) / Beginner / 75 - 79.9 / 14-15 years
  • Registered weight class: 75 - 79.9
  • Source competition limit: 75 - 79.9

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
Gi Kids / 14 - 15 years (Male) / White / -170 lbs
  • Registered weight class: -170 lbs
  • Source competition limit: -170 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
No Gi Kids / 14 - 15 years (Male) / Beginner (White and Grey) / -170 lbs
  • Registered weight class: -170 lbs
  • Source competition limit: -170 lbs

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Spring Open
Does not count
Teens Gi / White / 14-15 years / -75kg / Boy
  • Registered weight class: -75kg
  • Source competition limit: -75kg

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Spring Open
Does not count
Teens NoGi / White / 14-15 years / -75kg / Boy
  • Registered weight class: -75kg
  • Source competition limit: -75kg

No matches in the rating period · no valid weight evidence

COLOGNE WINTER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Registered weight class: -84 kg
  • Source competition limit: -84 kg

No matches in the rating period · no valid weight evidence

COLOGNE WINTER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys No-Gi (under 16 y.o.) / White / 14-15 years / -84 kg
  • Registered weight class: -84 kg
  • Source competition limit: -84 kg

No matches in the rating period · no valid weight evidence

INTERCLUB GRAPPLING VLAANDEREN - NO GI - 06/12
Does not count
Boys Youth NoGi / White & Grey / 13-15 / -79,3 kg (Medium heavy)

No matches in the rating period · no valid weight evidence

The Future League 8 – Gi & No-Gi
Does not count
Kids Gi / 13 - 15 years boys / White / +70 kg
  • Registered weight class: +70 kg
  • Source competition limit: +70 kg

No matches in the rating period · no valid weight evidence

The Future League 8 – Gi & No-Gi
Does not count
Kids Grappling (NoGi) / 13 - 15 years boys / White / +70 kg
  • Registered weight class: +70 kg
  • Source competition limit: +70 kg

No matches in the rating period · no valid weight evidence

Grappling Industries BRUSSELS
Does not count
No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -170 lbs
  • Registered weight class: -170 lbs
  • Source competition limit: -170 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries BRUSSELS
Does not count
Gi Kids / White / 14 - 15 years (Male) / -170 lbs
  • Registered weight class: -170 lbs
  • Source competition limit: -170 lbs

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Winter Open
≤ 75 kg · Counts as a competition event
Teens NoGi / White / 14-15 years / -75kg / Boy
  • Registered weight class: -75kg
  • Source competition limit: -75kg

2 matches in the rating period

'The Future League 7' by VERSUS
Does not count
70+kg / 15yr / White
  • Registered weight class: 70+kg
  • Source competition limit: 70+kg

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

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 4 matches in the rating period Selected outcome

Registrations and outcomes

GrappleCity: Rotterdam Winter Open
white · Counts as a match
Teens NoGi / White / 14-15 years / -75kg / Boy
  • Source belt category: white

2 matches in the rating period

'The Future League 7' by VERSUS
white · Counts as a match
70+kg / 15yr / White
  • Source belt category: white

2 matches in the rating period