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Leon Buchs

KARKARÁ BJJ

W–L
0–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,101
Rating based on Gi matches in the past 12 months.
No-Gi
-
Rating based on No-Gi matches in the past 12 months.
Current form
0–2
Results from the ten most recent rating-eligible matches.
Opponents
2
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

5
Indexed competition matches
Date Opponent Result Event Division
2025-10-11 Liam Ballif
Loss
Swiss BJJ Championship Gi · KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
2025-10-11 Sam Nathan
Loss
Swiss BJJ Championship Gi · KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
2023-09-16 Adryel Vieira Da Silva
Loss
Human Chess BJJ CUP Gi · KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / KIDS 3 / -30,20 kg
2023-09-16 Lenzo GERZNER
Win
Human Chess BJJ CUP Gi · KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / KIDS 3 / -30,20 kg
2022-11-26 Aaron Merad
Loss
Human Chess Kids 2022 Gi · BOYS GI / Grey / KIDS 2 / -25,20 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 Change 0 Rating 1,101

Rating-period composition

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

July 2026 No new matches Change 0 Rating 1,101

Rating-period composition

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

June 2026 No new matches Change +1 Rating 1,101

Rating-period composition

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

May 2026 No new matches Change 0 Rating 1,100

Rating-period composition

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

April 2026 No new matches Change 0 Rating 1,100

Rating-period composition

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

March 2026 No new matches Change -3 Rating 1,100

Rating-period composition

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

February 2026 No new matches Change -1 Rating 1,103

Rating-period composition

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

January 2026 No new matches Change 0 Rating 1,104

Rating-period composition

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

December 2025 No new matches Change 0 Rating 1,104

Rating-period composition

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

November 2025 No new matches Change -1 Rating 1,104

Rating-period composition

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

October 2025 2 new matches Change Starting point Rating 1,105

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
October 11, 2025 Liam Ballif
Swiss BJJ Championship KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
Method Points 04:00 0–6
Marginal influence -61
Loss
October 11, 2025 Sam Nathan
Swiss BJJ Championship KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
Method Points 04:00 0–9
Marginal influence -26
Relevant matches
1.7
Official ranking percentile
-
Performance
-

1.7 weighted matches against 2 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,265
Repeated-opponent share
0.0%
Network connectivity
80.9%

Classification evidence

Why U12?

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

  • U12 1 event vote Selected outcome

Registrations and outcomes

Swiss BJJ Championship
U12 · Counts
KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 40 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

  • ≤ 40 kg 1 competition event Selected outcome

Registrations and outcomes

Swiss BJJ Championship
≤ 40 kg · Counts as a competition event
KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
  • Registered weight class: -40,40 kg
  • Source competition limit: -40,40 kg

2 matches in the rating period

Classification evidence

Why Green?

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

  • green 2 matches in the rating period Selected outcome

Registrations and outcomes

Swiss BJJ Championship
green · Counts as a match
KIDS - BOYS GI / White/ Grey / Yellow / Orange / Green / INFANT / -40,40 kg
  • Source belt category: green

2 matches in the rating period