Soma Sakai - Rating | TopBJJ Index

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 4 new matches Change +7 Rating 1,489

Rating-period composition

Rating matches: 13 +4
Record: 12–1 Previous month 9–0
Opponents: 8 +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

August 15, 2026 Fuga Sakai

Grappling Industries HAMBURG Gi Kids / 14 - 15 years (Male) / Yellow/Orange / -115 lbs

Method Points 04:00 9–2

Marginal influence +5

Win

August 15, 2026 Fuga Sakai

Grappling Industries HAMBURG Gi Kids / 14 - 15 years (Male) / Yellow/Orange / -115 lbs

Method Submission 02:36 5–4

Marginal influence +5

Win

August 15, 2026 David Chkhaidze

Grappling Industries HAMBURG No Gi Kids / 14 - 15 years (Male) / Advanced (Yellow/Orange) / -115 lbs

Method Submission 01:22 0–0

Marginal influence +8

Loss

August 15, 2026 Fuga Sakai

Grappling Industries HAMBURG No Gi Kids / 14 - 15 years (Male) / Advanced (Yellow/Orange) / -115 lbs

Method Submission 00:31 0–6

Marginal influence -26

July 2026 No new matches Change +1 Rating 1,482

Rating-period composition

Rating matches: 9 0
Record: 9–0 Previous month 9–0
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 +4 Rating 1,481

Rating-period composition

Rating matches: 9 0
Record: 9–0 Previous month 9–0
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 · 4 left period Change -1 Rating 1,477

Rating-period composition

Rating matches: 9 -4
Record: 9–0 Previous month 11–2
Opponents: 6 -4
Events: 3 -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.

April 2026 2 new matches Change +18 Rating 1,478

Rating-period composition

Rating matches: 13 +2
Record: 11–2 Previous month 9–2
Opponents: 10 +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

April 26, 2026 Omar Al Mkhlalte

Combattle No-Gi Kids Grappling Tournament Teens 10 - 15 Years / Boys / - 54 Kg / 12-13 Jahre

Method Submission 01:07 0–0

Marginal influence +13

Win

April 26, 2026 Umar Hammad

Combattle No-Gi Kids Grappling Tournament Teens 10 - 15 Years / Boys / - 54 Kg / 12-13 Jahre

Method Submission 01:13 5–0

Marginal influence +6

March 2026 No new matches · 8 left period Change -53 Rating 1,460

Rating-period composition

Rating matches: 11 -8
Record: 9–2 Previous month 16–3
Opponents: 8 -5
Events: 3 -2

8 older matches left the 12-month period: 7 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

February 2026 No new matches Change -3 Rating 1,513

Rating-period composition

Rating matches: 19 0
Record: 16–3 Previous month 16–3
Opponents: 13 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.

January 2026 3 new matches Change +15 Rating 1,516

Rating-period composition

Rating matches: 19 +3
Record: 16–3 Previous month 13–3
Opponents: 13 +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.

Win

January 31, 2026 Yakup Kangal

The Combatch Games 5: Kids & Teens - Berlin Openclass Male Nogi (10 - 13 years) / Experten / 10 - 13 years / Open Class - Heavy (+45kg)

Method Submission 02:43 2–2

Marginal influence +6

Win

January 31, 2026 Lukas Steindl

The Combatch Games 5: Kids & Teens - Berlin Openclass Male Nogi (10 - 13 years) / Experten / 10 - 13 years / Open Class - Heavy (+45kg)

Method Submission 00:42 0–0

Marginal influence +5

Win

January 31, 2026 Lukas Steindl

The Combatch Games 5: Kids & Teens - Berlin Openclass Male Gi (10 - 13 years) / Fortgeschritten / 10 - 13 years / Open Class Heavy (+45kg)

Method Submission 00:16 0–0

Marginal influence +8

December 2025 No new matches Change -2 Rating 1,501

Rating-period composition

Rating matches: 16 0
Record: 13–3 Previous month 13–3
Opponents: 12 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 4 new matches · 8 left period Change +3 Rating 1,503

Rating-period composition

Rating matches: 16 -4
Record: 13–3 Previous month 16–4
Opponents: 12 -5
Events: 4 -1

8 older matches left the 12-month period: 7 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

November 2, 2025 Mykyta Svidnytskyi

Grappling Industries AMSTERDAM No Gi Kids / Advanced (Yellow/Orange) / 12 - 13 years (Male) / -115 lbs

Method Points 03:00 2–0

Marginal influence +14

Win

November 2, 2025 Mykyta Svidnytskyi

Grappling Industries AMSTERDAM No Gi Kids / Advanced (Yellow/Orange) / 12 - 13 years (Male) / -115 lbs

Method Submission 01:27 0–0

Marginal influence +14

Win

November 2, 2025 Taye Beudeker

Grappling Industries AMSTERDAM Gi Kids / Yellow/Orange / 12 - 13 years (Male) / -115 lbs

Method Submission 01:08 6–0

Marginal influence +10

Win

November 2, 2025 Mykyta Svidnytskyi

Grappling Industries AMSTERDAM Gi Kids / Yellow/Orange / 12 - 13 years (Male) / -115 lbs

Method Points 03:00 2–0

Marginal influence +20

October 2025 No new matches · 2 left period Change +24 Rating 1,500

Rating-period composition

Rating matches: 20 -2
Record: 16–4 Previous month 16–6
Opponents: 17 -1
Events: 5 -1

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

September 2025 No new matches Change +2 Rating 1,476

Rating-period composition

Rating matches: 22 0
Record: 16–6 Previous month 16–6
Opponents: 18 0
Events: 6 0

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

Relevant matches: 10.1

Official ranking percentile: Top 10%

Performance: 27.6 pp above expectation

10.1 weighted matches against 8 different opponents across 4 events

Weighted win rate: 91.1%
Expected win rate: 63.5%
Average opponent rating: 1,341
Repeated-opponent share: 38.5%
Network connectivity: 80.9%