TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
ES

Jon Matos Mendez

Blakz International

W–L
1–3
Won and lost rating-eligible matches in the past 12 months.
Gi
1,144
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
1–3
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

4
Indexed competition matches
Date Opponent Result Event Division
2026-04-26 Egoitz Alonso
Loss
OPEN SANTURTZI | OSO DURO Gi · Boys Gi / White / Teen III (15yrs) / -60,60 kg
2026-04-26 Alejandro Tiparu
Loss
OPEN SANTURTZI | OSO DURO Gi · Boys Gi / White / Teen III (15yrs) / -60,60 kg
2026-03-01 Agustin Bermejo
Loss
OPEN BALMASEDA | OSO DURO Gi · Boys Gi / White / Teen II (14yrs) / -60,60 kg
2026-03-01 Markel Pérez Grenabuena
Win
OPEN BALMASEDA | OSO DURO Gi · Boys Gi / White / Teen II (14yrs) / -60,60 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 1,144

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
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.

July 2026 No new matches Change -6 Rating 1,144

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
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.

June 2026 No new matches Change 0 Rating 1,150

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
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.

May 2026 No new matches Change 0 Rating 1,150

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
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.

April 2026 2 new matches Change -44 Rating 1,150

Rating-period composition

Rating matches
4 +2
Record
1–3 Previous month 1–1
Opponents
4 +2
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.
Loss
April 26, 2026 Egoitz Alonso
OPEN SANTURTZI | OSO DURO Boys Gi / White / Teen III (15yrs) / -60,60 kg
Method Submission 02:16 0–7
Marginal influence -35
Loss
April 26, 2026 Alejandro Tiparu
OPEN SANTURTZI | OSO DURO Boys Gi / White / Teen III (15yrs) / -60,60 kg
Method Points 04:00 3–6
Marginal influence -24
March 2026 2 new matches Change Starting point Rating 1,194

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 Agustin Bermejo
OPEN BALMASEDA | OSO DURO Boys Gi / White / Teen II (14yrs) / -60,60 kg
Method Points 04:00 0–10
Marginal influence -36
Win
OPEN BALMASEDA | OSO DURO Boys Gi / White / Teen II (14yrs) / -60,60 kg
Method Submission 01:00 6–0
Marginal influence +35
Relevant matches
3.4
Official ranking percentile
-
Performance
-

3.4 weighted matches against 4 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,221
Repeated-opponent share
0.0%
Network connectivity
80.9%

Classification evidence

Why U16?

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

  • U16 2 event votes Selected outcome

Registrations and outcomes

OPEN SANTURTZI | OSO DURO
U16 · Counts
Boys Gi / White / Teen III (15yrs) / -60,60 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16
OPEN BALMASEDA | OSO DURO
U16 · Counts
Boys Gi / White / Teen II (14yrs) / -60,60 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 61 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

  • ≤ 61 kg 2 competition events Selected outcome

Registrations and outcomes

OPEN SANTURTZI | OSO DURO
≤ 61 kg · Counts as a competition event
Boys Gi / White / Teen III (15yrs) / -60,60 kg
  • Registered weight class: -60,60 kg
  • Source competition limit: -60,60 kg

2 matches in the rating period

OPEN BALMASEDA | OSO DURO
≤ 61 kg · Counts as a competition event
Boys Gi / White / Teen II (14yrs) / -60,60 kg
  • Registered weight class: -60,60 kg
  • Source competition limit: -60,60 kg

2 matches in the rating period

Classification evidence

Why White?

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

  • white 4 matches in the rating period Selected outcome

Registrations and outcomes

OPEN SANTURTZI | OSO DURO
white · Counts as a match
Boys Gi / White / Teen III (15yrs) / -60,60 kg
  • Source belt category: white

2 matches in the rating period

OPEN BALMASEDA | OSO DURO
white · Counts as a match
Boys Gi / White / Teen II (14yrs) / -60,60 kg
  • Source belt category: white

2 matches in the rating period