TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
DE

Jona Klass

Mekong Box Gym Neu-Ulm

W–L
1–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,202
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
1–2
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

3
Indexed competition matches
Date Opponent Result Event Division
2026-02-07 Muhammed Altuntas
Win
GTT CUP - Grappling / BJJ Gi · Boys 15-17 years / Beginner / +80 kg
2026-02-07 Daniel Lomidze
Loss
GTT CUP - Grappling / BJJ Gi · Boys 15-17 years / Beginner / +80 kg
2025-11-29 Daniel Lomidze
Loss
GTT CUP - Grappling / BJJ Gi · Boys 15-17 years / Beginner / +80 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 1,202

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

July 2026 No new matches Change +10 Rating 1,202

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

June 2026 No new matches Change 0 Rating 1,192

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

May 2026 No new matches Change 0 Rating 1,192

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

April 2026 No new matches Change 0 Rating 1,192

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

March 2026 No new matches Change 0 Rating 1,192

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
2 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.

February 2026 2 new matches Change +68 Rating 1,192

Rating-period composition

Rating matches
3 +2
Record
1–2 Previous month 0–1
Opponents
2 +1
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
February 7, 2026 Muhammed Altuntas
GTT CUP - Grappling / BJJ Boys 15-17 years / Beginner / +80 kg
Method Decision 04:44 0–0
Marginal influence +43
Loss
February 7, 2026 Daniel Lomidze
GTT CUP - Grappling / BJJ Boys 15-17 years / Beginner / +80 kg
Method Submission 03:12 0–0
Marginal influence -24
January 2026 No new matches Change 0 Rating 1,124

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.

December 2025 No new matches Change 0 Rating 1,124

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.

November 2025 1 new match Change Starting point Rating 1,124

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
November 29, 2025 Daniel Lomidze
GTT CUP - Grappling / BJJ Boys 15-17 years / Beginner / +80 kg
Method Submission 02:53 0–0
Marginal influence -24
Relevant matches
2.1
Official ranking percentile
-
Performance
-

2.1 weighted matches against 2 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,272
Repeated-opponent share
33.3%
Network connectivity
80.9%

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 1 event vote Selected outcome

Registrations and outcomes

GTT CUP - Grappling / BJJ
U18 · Counts
Male Gi +18 years / White / Adult / -82,3 kg (Middle)
  • Competition age 16
Boys 15-17 years / Beginner / +80 kg
  • Competition age 16
GTT CUP - Grappling / BJJ
Does not count
Boys 15-17 years / Beginner / +80 kg
  • Competition age 15