Noah Gruber - 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 -2 Rating 1,383

Rating-period composition

Rating matches: 7 0
Record: 5–2 Previous month 5–2
Opponents: 7 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.

July 2026 No new matches Change -1 Rating 1,385

Rating-period composition

Rating matches: 7 0
Record: 5–2 Previous month 5–2
Opponents: 7 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.

June 2026 No new matches · 1 left period Change +25 Rating 1,386

Rating-period composition

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

May 2026 1 new match Change +35 Rating 1,361

Rating-period composition

Rating matches: 8 +1
Record: 5–3 Previous month 4–3
Opponents: 8 +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

May 3, 2026 Valentin Veya

ApexZone Grappling Zurich - 1000€ Cash Prize Boys 15-17 years / Beginner / -75 kg

Method Disqualification 03:19 0–1

Marginal influence +23

April 2026 No new matches Change 0 Rating 1,326

Rating-period composition

Rating matches: 7 0
Record: 4–3 Previous month 4–3
Opponents: 7 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 1 new match Change -25 Rating 1,326

Rating-period composition

Rating matches: 7 +1
Record: 4–3 Previous month 4–2
Opponents: 7 +1
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 1, 2026 Iven Grossen

ADCC Suisse National Championship 2026 MALE YOUTH 15-17 years / 15-17 years / Beginner / -75 kg

Method Submission 03:07 0–0

Marginal influence -25

February 2026 No new matches Change 0 Rating 1,351

Rating-period composition

Rating matches: 6 0
Record: 4–2 Previous month 4–2
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.

January 2026 2 new matches Change +89 Rating 1,351

Rating-period composition

Rating matches: 6 +2
Record: 4–2 Previous month 2–2
Opponents: 6 +2
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

January 18, 2026 Yahya Gharir

ApexZone Grappling Zurich - 500 EURO CASH PRIZE Boys 15-17 years / Beginner / -75 kg

Method Points 05:00 15–3

Marginal influence +18

Win

January 18, 2026 Nikodem Buga

ApexZone Grappling Zurich - 500 EURO CASH PRIZE Boys 15-17 years / Beginner / -75 kg

Method Disqualification 03:47 0–0

Marginal influence +22

December 2025 No new matches Change +8 Rating 1,262

Rating-period composition

Rating matches: 4 0
Record: 2–2 Previous month 2–2
Opponents: 4 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.

November 2025 3 new matches Change +132 Rating 1,254

Rating-period composition

Rating matches: 4 +3
Record: 2–2 Previous month 0–1
Opponents: 4 +3
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

November 23, 2025 Gene Epstein

ADCC Suisse Open Championship 2025 BOYS / 15-17 years / Beginner / -75 kg

Method Points 05:00 7–2

Marginal influence +11

Loss

November 23, 2025 Adrian Sanduta

ADCC Suisse Open Championship 2025 BOYS / 15-17 years / Beginner / -75 kg

Method Submission 04:49 0–3

Marginal influence -18

Win

November 23, 2025 Mateus De Moura Lima Pereira

ADCC Suisse Open Championship 2025 BOYS / 15-17 years / Beginner / -75 kg

Method Points 05:00 6–4

Marginal influence +13

October 2025 No new matches Change 0 Rating 1,122

Rating-period composition

Rating matches: 1 0
Record: 0–1 Previous month 0–1
Opponents: 1 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.

September 2025 No new matches Change 0 Rating 1,122

Rating-period composition

Rating matches: 1 0
Record: 0–1 Previous month 0–1
Opponents: 1 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.

Relevant matches: 6

Official ranking percentile: -

Performance: 25.4 pp above expectation

6 weighted matches against 7 different opponents across 4 events

Weighted win rate: 72.4%
Expected win rate: 47.0%
Average opponent rating: 1,281
Repeated-opponent share: 0.0%
Network connectivity: 80.9%