TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
ES

Nayara Roman Arias

MSBJJFTT

W–L
0–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,140
Rating based on Gi matches in the past 12 months.
No-Gi
1,136
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
1
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
5
Bronze
0
Total medals
5
Events with results
3

Full career record

Wins
0
Losses
7
Matches
7
Win rate
0.0%

Ways of winning

Submission
0
Points
0
Decision
0
Disqualification
0

Recent recorded placements

  2. WORLD CUP BJJ 2025

    ES Event record 0–2

    • Kids Girls NO-GI / White-Grey / Infantil B / +51,0 kg
    • Kids Girls GI / White-Grey / Infantil B / +51,0 kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
1
Distinct events
1

Ways of winning

  • Submission 0
  • Points 0
  • Decision 0
  • Other recorded result 0

Gi versus No-Gi

Gi

Rating
1140
Record
0–1
Win rate
0%
Submission share
-

No-Gi

Rating
1136
Record
0–1
Win rate
0%
Submission share
-

Win quality

Grouped by pre-match win probability. This provides context and does not award an extra rating bonus.

As underdog 0–0 Less than 35% expected win probability before the match.
Even match 0–0 Between 35% and 65% expected win probability before the match.
As favourite 0–0 More than 65% expected win probability before the match.

Development

Rating and development

The same published rating, supported by trend, opponent strength and evidence quality.

Current rating
1,231
Change over 90 days
-11
Highest rating in 12 months
1,180
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,461
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
50%
Effective evidence
2
Confidence
35/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 0–4 0–4 across 4 rematches against 1 repeat opponents.

Rivals

Opponent Head-to-head record Matches

Recent tournaments

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 1,231

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 1,231

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 · 5 left period Change +40 Rating 1,231

Rating-period composition

Rating matches
2 -5
Record
0–2 Previous month 0–7
Opponents
1 -3
Events
1 -2

5 older matches left the 12-month period: 0 won and 5 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 +8 Rating 1,191

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

April 2026 No new matches Change -1 Rating 1,183

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

March 2026 No new matches Change +3 Rating 1,184

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

February 2026 No new matches Change 0 Rating 1,181

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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 No new matches Change 0 Rating 1,181

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

December 2025 No new matches Change 0 Rating 1,181

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

November 2025 No new matches Change +7 Rating 1,181

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

October 2025 No new matches Change +5 Rating 1,174

Rating-period composition

Rating matches
7 0
Record
0–7 Previous month 0–7
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.

September 2025 2 new matches Change -11 Rating 1,169

Rating-period composition

Rating matches
7 +2
Record
0–7 Previous month 0–5
Opponents
4 0
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
September 27, 2025 Marta Sencianes Muñoz
COSTA DAURADA BJJ CUP GI & NO-GI 2025 Kids Girls GI / White-Grey / Infantil B / +51,0 kg
Method Points 03:00 0–5
Marginal influence +3
Loss
September 27, 2025 Marta Sencianes Muñoz
COSTA DAURADA BJJ CUP GI & NO-GI 2025 Kids Girls NO-GI / White-Grey / Infantil B / +51,0 kg
Method Submission 01:05 0–6
Marginal influence -3
Relevant matches
2
Official ranking percentile
-
Performance
-

2 weighted matches against 1 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,461
Repeated-opponent share
50.0%
Network connectivity
0.1%

Classification evidence

Why U14?

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

  • U14 1 event vote Selected outcome

Registrations and outcomes

COSTA DAURADA BJJ CUP GI & NO-GI 2025
U14 · Counts
Kids Girls NO-GI / White-Grey / Infantil B / +51,0 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Kids Girls GI / White-Grey / Infantil B / +51,0 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

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 2 matches in the rating period Selected outcome

Registrations and outcomes

COSTA DAURADA BJJ CUP GI & NO-GI 2025
grey · Counts as a match
Kids Girls GI / White-Grey / Infantil B / +51,0 kg
  • Source belt category: grey

1 match in the rating period

COSTA DAURADA BJJ CUP GI & NO-GI 2025
grey · Counts as a match
Kids Girls NO-GI / White-Grey / Infantil B / +51,0 kg
  • Source belt category: grey

1 match in the rating period