Samuel Bostik - 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 No new matches Change 0 Rating 1,488

Rating-period composition

Rating matches: 12 0
Record: 11–1 Previous month 11–1
Opponents: 12 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 -5 Rating 1,488

Rating-period composition

Rating matches: 12 0
Record: 11–1 Previous month 11–1
Opponents: 12 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 12 new matches · 3 left period Change +202 Rating 1,493

Rating-period composition

Rating matches: 12 +9
Record: 11–1 Previous month 2–1
Opponents: 12 +9
Events: 3 +2

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

June 27, 2026 Georgios Kaminidis

Styrian Open Championship 2026 BJJ / Jiu Jitsu Gi and NoGi, Fighting, Duo System Tournament Juvenile Boys No-Gi / White / U18 (16-17 yrs) / -77 kg

Method Submission 03:52 15–0

Marginal influence +13

Win

June 27, 2026 Mansur Magamaziev

Styrian Open Championship 2026 BJJ / Jiu Jitsu Gi and NoGi, Fighting, Duo System Tournament Juvenile Boys No-Gi / White / U18 (16-17 yrs) / -77 kg

Method Points 04:00 18–0

Marginal influence +21

Win

June 27, 2026 Jesaja Retz

Styrian Open Championship 2026 BJJ / Jiu Jitsu Gi and NoGi, Fighting, Duo System Tournament Juvenile Boys No-Gi / White / U18 (16-17 yrs) / -77 kg

Method Submission 02:40 2–0

Marginal influence +14

Win

June 27, 2026 Mark Bindeev

Styrian Open Championship 2026 BJJ / Jiu Jitsu Gi and NoGi, Fighting, Duo System Tournament Juvenile Boys No-Gi / White / U18 (16-17 yrs) / -77 kg

Method Submission 03:33 2–0

Marginal influence +7

Loss

June 20, 2026 Matyáš Langer

Open Czech championship submission only 2026 NOGI - Juniors Boys / -77 kg / Beginner (<2 years of training)

Method Disqualification 00:39 0–0

Marginal influence -46

Win

June 20, 2026 Tomáš Rémiš

Open Czech championship submission only 2026 NOGI - Juniors Boys / -77 kg / Beginner (<2 years of training)

Method Submission 01:59 0–0

Marginal influence +15

Win

June 13, 2026 Efendi Israfilov

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 00:55 0–0

Marginal influence +6

Win

June 13, 2026 Armin Demiri

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 00:37 0–0

Marginal influence +13

Win

June 13, 2026 Anes Casic

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 01:50 3–2

Marginal influence +12

Win

June 13, 2026 Ali Aloklah

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 00:12 0–0

Marginal influence +17

Win

June 13, 2026 Alex Kucher

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 00:34 0–0

Marginal influence +6

Win

June 13, 2026 Alan Ivanov

Fight2Submit Graz Open 14 I 13. Juni Juvenile Boys No-Gi / White / Juvenile 2 / Über 70 kg

Method Submission 03:24 7–0

Marginal influence +9

May 2026 No new matches · 5 left period Change -50 Rating 1,291

Rating-period composition

Rating matches: 3 -5
Record: 2–1 Previous month 5–3
Opponents: 3 -4
Events: 1 -1

5 older matches left the 12-month period: 3 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 No new matches · 2 left period Change -4 Rating 1,341

Rating-period composition

Rating matches: 8 -2
Record: 5–3 Previous month 6–4
Opponents: 7 -2
Events: 2 -1

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

March 2026 No new matches · 1 left period Change +3 Rating 1,345

Rating-period composition

Rating matches: 10 -1
Record: 6–4 Previous month 6–5
Opponents: 9 -1
Events: 3 -1

1 older matches left the 12-month period: 0 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 0 Rating 1,342

Rating-period composition

Rating matches: 11 0
Record: 6–5 Previous month 6–5
Opponents: 10 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 0 Rating 1,342

Rating-period composition

Rating matches: 11 0
Record: 6–5 Previous month 6–5
Opponents: 10 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 +2 Rating 1,342

Rating-period composition

Rating matches: 11 0
Record: 6–5 Previous month 6–5
Opponents: 10 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 No new matches Change +1 Rating 1,340

Rating-period composition

Rating matches: 11 0
Record: 6–5 Previous month 6–5
Opponents: 10 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.

October 2025 No new matches · 4 left period Change +43 Rating 1,339

Rating-period composition

Rating matches: 11 -4
Record: 6–5 Previous month 6–9
Opponents: 10 -4
Events: 4 -1

4 older matches left the 12-month period: 0 won and 4 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 0 Rating 1,296

Rating-period composition

Rating matches: 15 0
Record: 6–9 Previous month 6–9
Opponents: 14 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.

Relevant matches: 8.3

Official ranking percentile: -

Performance: 20.1 pp above expectation

8.3 weighted matches against 12 different opponents across 3 events

Weighted win rate: 89.9%
Expected win rate: 69.9%
Average opponent rating: 1,295
Repeated-opponent share: 0.0%
Network connectivity: 80.9%