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Mariam Kallas Baba

GRACIE BARRA BARCELONA

W–L
0–1
Won and lost rating-eligible matches in the past 12 months.
Gi
1,137
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
0–1
Results from the ten most recent rating-eligible matches.
Opponents
1
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

9
Indexed competition matches
Date Opponent Result Event Division
2026-01-10 Julia Dimitrova
Loss
CATALUÑA BJJ CUP GI & NO-GI 2026 Gi · Kids Girls GI / Grey / Infantil B / -35,0 kg
2025-06-28 Leah Jurado Pastrano
Loss
WORLD CUP BJJ 2025 No-Gi · Kids Girls NO-GI / White-Grey / Infantil A / -29,0 kg
2025-06-28 Leah Jurado Pastrano
Loss
WORLD CUP BJJ 2025 Gi · Kids Girls GI / Grey / Infantil A / -29,0 kg
2025-03-01 Gabriela Picado Alcaraz
Win
KIMURA CUP BARCELONA 2025. Gi · Girls Gi / Grey / kids 3 / -32 kg
2025-03-01 Eva Valenzuela Velazquez
Win
KIMURA CUP BARCELONA 2025. Gi · Girls Gi / Grey / kids 3 / -32 kg
2024-11-16 Danae Mas Castillo
Loss
GILAND BJJ KIDS GI & NO-GI 2024 Gi · Kids Girls GI / Grey / Infantil A / -26,0 kg
2024-11-16 Iris Rubio Royo
Win
GILAND BJJ KIDS GI & NO-GI 2024 Gi · Kids Girls GI / Grey / Infantil A / -26,0 kg
2024-05-04 Martina Diaz Arias
Loss
CAMPEONATO DE ESPAÑA DE BJJ GI & NO-GI 2024 Gi · Kids Girls GI / White-Grey / Infantil A / -26,0 kg
2023-07-22 Sarah Gontijo Passos
Win
EJIU - BARCELONA SUMMER OPEN Gi · Girls Gi / Grey / Pee Wee I (7yrs) / -27 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 1,137

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.

July 2026 No new matches Change 0 Rating 1,137

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.

June 2026 No new matches · 2 left period Change -57 Rating 1,137

Rating-period composition

Rating matches
1 -2
Record
0–1 Previous month 0–3
Opponents
1 -1
Events
1 -1

2 older matches left the 12-month period: 0 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

May 2026 No new matches Change -2 Rating 1,194

Rating-period composition

Rating matches
3 0
Record
0–3 Previous month 0–3
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 1,196

Rating-period composition

Rating matches
3 0
Record
0–3 Previous month 0–3
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 · 2 left period Change -76 Rating 1,196

Rating-period composition

Rating matches
3 -2
Record
0–3 Previous month 2–3
Opponents
2 -2
Events
2 -1

2 older matches left the 12-month period: 2 won and 0 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 1,272

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
4 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 1 new match Change -12 Rating 1,272

Rating-period composition

Rating matches
5 +1
Record
2–3 Previous month 2–2
Opponents
4 +1
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.
Loss
January 10, 2026 Julia Dimitrova
CATALUÑA BJJ CUP GI & NO-GI 2026 Kids Girls GI / Grey / Infantil B / -35,0 kg
Method Submission 00:12 0–0
Marginal influence -42
December 2025 No new matches Change -1 Rating 1,284

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
Opponents
3 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 No new matches · 2 left period Change -13 Rating 1,285

Rating-period composition

Rating matches
4 -2
Record
2–2 Previous month 3–3
Opponents
3 -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.

October 2025 No new matches Change +1 Rating 1,298

Rating-period composition

Rating matches
6 0
Record
3–3 Previous month 3–3
Opponents
5 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.

September 2025 No new matches Change -7 Rating 1,297

Rating-period composition

Rating matches
6 0
Record
3–3 Previous month 3–3
Opponents
5 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.

Relevant matches
1
Official ranking percentile
-
Performance
-

1 weighted matches against 1 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,393
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

CATALUÑA BJJ CUP GI & NO-GI 2026
U12 · Counts
Kids Girls NO-GI / Grey / Infantil B / -32,0 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12
Kids Girls GI / Grey / Infantil B / -35,0 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 35 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

  • ≤ 35 kg 1 competition event Selected outcome

Registrations and outcomes

CATALUÑA BJJ CUP GI & NO-GI 2026
Does not count
Kids Girls NO-GI / Grey / Infantil B / -32,0 kg
  • Registered weight class: -32,0 kg
  • Source competition limit: -32,0 kg

No matches in the rating period · no valid weight evidence

CATALUÑA BJJ CUP GI & NO-GI 2026
≤ 35 kg · Counts as a competition event
Kids Girls GI / Grey / Infantil B / -35,0 kg
  • Registered weight class: -35,0 kg
  • Source competition limit: -35,0 kg

1 match in the rating period

Classification evidence

Why Grey?

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

  • grey 1 match in the rating period Selected outcome

Registrations and outcomes

CATALUÑA BJJ CUP GI & NO-GI 2026
grey · Counts as a match
Kids Girls GI / Grey / Infantil B / -35,0 kg
  • Source belt category: grey

1 match in the rating period