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Naomi Romero Bas

CFC Team

W–L
8–0
Won and lost rating-eligible matches in the past 12 months.
Gi
1,428
Rating based on Gi matches in the past 12 months.
No-Gi
1,269
Rating based on No-Gi matches in the past 12 months.
Current form
8–0
Results from the ten most recent rating-eligible matches.
Opponents
6
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
12
Silver
4
Bronze
2
Total medals
18
Events with results
17

Full career record

Wins
23
Losses
8
Matches
31
Win rate
74.2%

Ways of winning

Submission
14
Points
5
Decision
0
Disqualification
3

Personal records

Longest winning streak
18
Longest submission streak
5
Longest gold streak
9
Largest recorded points win
10–0

Recent recorded placements

  5. WORLD CUP BJJ 2025

    ES Event record 3–0

    • Kids Girls GI / Grey / Infanto Juvenil A / -50,0 Kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
18
Unique opponents
6
Distinct events
4

Ways of winning

  • Submission 5 63%
  • Points 2 25%
  • Decision 0 0%
  • Other recorded result 1 13%

Gi versus No-Gi

Gi

Rating
1428
Record
7–0
Win rate
100%
Submission share
71%

No-Gi

Rating
1269
Record
1–0
Win rate
100%
Submission share
0%

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 1–0 Between 35% and 65% expected win probability before the match.
As favourite 7–0 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
1,449
Change over 90 days
+1
Highest rating in 12 months
1,564
Performance versus expectation
+34.3 pp
Schedule strength
Top 97%
Average opponent rating
1,223
Weighted win rate
100%
Expected win rate
66%
Repeat-opponent share
25%
Effective evidence
5.9
Confidence
75/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 8–7 8–7 across 15 rematches against 6 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1955 Natalia Mateu Nogales · KIMURA CUP SALOU Pts 4–0 Earlier · Sub 01:11 0–0 November 29, 2025 · GILAND BJJ KIDS GI & NO-GI 2025

Full career

  1. #693 Maria Jimenez Martos · KIMURA CUP BARCELONA 2025. Pts 10–0
  2. #1906 Elena Anahi Villavicencio Vives · GIRONA BJJ CUP GI & NO-GI 2025 Sub 00:48 0–0
  3. #1955 Natalia Mateu Nogales · KIMURA CUP SALOU Pts 4–0 Earlier · Sub 01:11 0–0 November 29, 2025 · GILAND BJJ KIDS GI & NO-GI 2025
  4. #2380 Naia Dominguez Alonso · GIRONA BJJ CUP GI & NO-GI 2025 Sub 01:53 7–0 Earlier · Sub 02:56 3–0 April 6, 2025 · GILAND BJJ 2025

Rivals

Opponent Head-to-head record Matches
Nadia Sánchez 2–1 3

Around this athlete

Athlete Rank Rating
Antonino Gandolfo #455 1,449
Naomi Romero Bas #456 1,449
Aylan Saâdi #457 1,449

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 1,449

Rating-period composition

Rating matches
8 0
Record
8–0 Previous month 8–0
Opponents
6 0
Events
4 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 +1 Rating 1,449

Rating-period composition

Rating matches
8 0
Record
8–0 Previous month 8–0
Opponents
6 0
Events
4 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 · 3 left period Change -52 Rating 1,448

Rating-period composition

Rating matches
8 -3
Record
8–0 Previous month 11–0
Opponents
6 -3
Events
4 -1

3 older matches left the 12-month period: 3 won and 0 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 1,500

Rating-period composition

Rating matches
11 0
Record
11–0 Previous month 11–0
Opponents
9 0
Events
5 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 · 5 left period Change -53 Rating 1,498

Rating-period composition

Rating matches
11 -5
Record
11–0 Previous month 16–0
Opponents
9 -3
Events
5 -3

5 older matches left the 12-month period: 5 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

March 2026 2 new matches · 3 left period Change -9 Rating 1,551

Rating-period composition

Rating matches
16 -1
Record
16–0 Previous month 16–1
Opponents
12 -1
Events
8 -1

3 older matches left the 12-month period: 2 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

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
KIMURA CUP SALOU Girls Gi / Grey / Teen / -57 kg
Method Points 03:00 4–0
Marginal influence +12
Win
KIMURA CUP SALOU Girls Gi / Grey / Teen / -57 kg
Method Points 03:00 7–3
Marginal influence +16
February 2026 No new matches Change +6 Rating 1,560

Rating-period composition

Rating matches
17 0
Record
16–1 Previous month 16–1
Opponents
13 0
Events
9 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 +3 Rating 1,554

Rating-period composition

Rating matches
17 0
Record
16–1 Previous month 16–1
Opponents
13 0
Events
9 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 +1 Rating 1,551

Rating-period composition

Rating matches
17 0
Record
16–1 Previous month 16–1
Opponents
13 0
Events
9 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

November 2025 2 new matches · 1 left period Change -14 Rating 1,550

Rating-period composition

Rating matches
17 +1
Record
16–1 Previous month 15–1
Opponents
13 0
Events
9 0

1 older matches left the 12-month period: 1 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

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
November 29, 2025 Natalia Mateu Nogales
GILAND BJJ KIDS GI & NO-GI 2025 Kids Girls GI / White -Grey / Infanto Juvenil A / -58,0 kg
Method Submission 01:11 0–0
Marginal influence +12
Win
November 29, 2025 Yasmin Lachaab Rodriguez
GILAND BJJ KIDS GI & NO-GI 2025 Kids Girls GI / White -Grey / Infanto Juvenil A / -58,0 kg
Method Submission 01:33 9–0
Marginal influence +14
October 2025 2 new matches Change +10 Rating 1,564

Rating-period composition

Rating matches
16 +2
Record
15–1 Previous month 13–1
Opponents
13 +2
Events
9 +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
October 18, 2025 Leyre Monagas Cabrera
EUROPE CUP BJJ 2025 - ETAPA FINAL Kids Girls GI / Yellow / Infanto Juvenil A / -58,0 kg
Method Submission 00:26 0–0
Marginal influence +15
Win
October 18, 2025 Andrea Musique Rodela
EUROPE CUP BJJ 2025 - ETAPA FINAL Kids Girls GI / Yellow / Infanto Juvenil A / -58,0 kg
Method Submission 03:26 22–0
Marginal influence +13
September 2025 2 new matches · 2 left period Change +12 Rating 1,554

Rating-period composition

Rating matches
14 0
Record
13–1 Previous month 12–2
Opponents
11 +1
Events
8 0

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.

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
September 27, 2025 Martina Beas
COSTA DAURADA BJJ CUP GI & NO-GI 2025 Kids Girls NO-GI / Grey-Orange / Infanto Juvenil A / -54,0 kg
Method Disqualification 01:24 3–0
Marginal influence -21
Win
September 27, 2025 Natalia Mateu Nogales
COSTA DAURADA BJJ CUP GI & NO-GI 2025 Kids Girls GI / Grey / Infanto Juvenil A / -54,0 kg
Method Submission 00:19 0–0
Marginal influence +15
Relevant matches
5.9
Official ranking percentile
Top 15%
Performance
34.3 pp above expectation

5.9 weighted matches against 6 different opponents across 4 events

Weighted win rate
100.0%
Expected win rate
65.7%
Average opponent rating
1,223
Repeated-opponent share
25.0%
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 1 event vote Selected outcome

Registrations and outcomes

KIMURA CUP SALOU
U16 · Counts
Girls Gi / Grey / Teen / -57 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
GILAND BJJ KIDS GI & NO-GI 2025
Does not count
Kids Girls GI / White -Grey / Infanto Juvenil A / -58,0 kg
  • Competition age 13
  • Registered age: u14
  • Source category: u14
EUROPE CUP BJJ 2025 - ETAPA FINAL
Does not count
Kids Girls GI / Yellow / Infanto Juvenil A / -58,0 kg
  • Competition age 13
  • Registered age: u14
  • Source category: u14
COSTA DAURADA BJJ CUP GI & NO-GI 2025
Does not count
Kids Girls NO-GI / Grey-Orange / Infanto Juvenil A / -54,0 kg
  • Competition age 13
  • Registered age: u14
  • Source category: u14
Kids Girls GI / Grey / Infanto Juvenil A / -54,0 kg
  • Competition age 13
  • Registered age: u14
  • Source category: u14

Classification evidence

Why ≤ 54 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

  • ≤ 54 kg 1 competition event Selected outcome
  • ≤ 57 kg 1 competition event
  • ≤ 58 kg 1 competition event

Registrations and outcomes

KIMURA CUP SALOU
≤ 57 kg · Counts as a competition event
Girls Gi / Grey / Teen / -57 kg
  • Registered weight class: -57 kg
  • Source competition limit: -57 kg

2 matches in the rating period

GILAND BJJ KIDS GI & NO-GI 2025
≤ 54 kg · Counts as a competition event
Kids Girls GI / White -Grey / Infanto Juvenil A / -58,0 kg
  • Registered weight class: -54,0 kg
  • Source competition limit: -54,0 kg

2 matches in the rating period

EUROPE CUP BJJ 2025 - ETAPA FINAL
≤ 58 kg · Counts as a competition event
Kids Girls GI / Yellow / Infanto Juvenil A / -58,0 kg
  • Registered weight class: -58,0 kg
  • Source competition limit: -58,0 kg

2 matches in the rating period

COSTA DAURADA BJJ CUP GI & NO-GI 2025
≤ 54 kg · Does not count
Kids Girls NO-GI / Grey-Orange / Infanto Juvenil A / -54,0 kg
  • Registered weight class: -54,0 kg
  • Source competition limit: -54,0 kg

1 match in the rating period · outside the three most recent unambiguous events

COSTA DAURADA BJJ CUP GI & NO-GI 2025
≤ 54 kg · Does not count
Kids Girls GI / Grey / Infanto Juvenil A / -54,0 kg
  • Registered weight class: -54,0 kg
  • Source competition limit: -54,0 kg

1 match in the rating period · outside the three most recent unambiguous events

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 5 matches in the rating period Selected outcome
  • yellow 2 matches in the rating period
  • orange 1 match in the rating period

Registrations and outcomes

KIMURA CUP SALOU
grey · Counts as a match
Girls Gi / Grey / Teen / -57 kg
  • Source belt category: grey

2 matches in the rating period

GILAND BJJ KIDS GI & NO-GI 2025
grey · Counts as a match
Kids Girls GI / White -Grey / Infanto Juvenil A / -58,0 kg
  • Source belt category: grey

2 matches in the rating period

EUROPE CUP BJJ 2025 - ETAPA FINAL
yellow · Counts as a match
Kids Girls GI / Yellow / Infanto Juvenil A / -58,0 kg
  • Source belt category: yellow

2 matches in the rating period

COSTA DAURADA BJJ CUP GI & NO-GI 2025
orange · Counts as a match
Kids Girls NO-GI / Grey-Orange / Infanto Juvenil A / -54,0 kg
  • Source belt category: orange

1 match in the rating period

COSTA DAURADA BJJ CUP GI & NO-GI 2025
grey · Counts as a match
Kids Girls GI / Grey / Infanto Juvenil A / -54,0 kg
  • Source belt category: grey

1 match in the rating period