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David Simon

NINE-TAILS Martial Arts

W–L
2–3
Won and lost rating-eligible matches in the past 12 months.
Gi
1,190
Rating based on Gi matches in the past 12 months.
No-Gi
1,205
Rating based on No-Gi matches in the past 12 months.
Current form
2–3
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

6
Indexed competition matches
Date Opponent Result Event Division
2026-03-28 Lennox Baetcke
Win
TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI) No-Gi · Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
2026-03-28 Paul Weismantel
Loss
TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI) No-Gi · Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
2025-09-27 Osama Jawish
Loss
King Tatami - BJJ Gi Kids Pro Gi · Boys Gi / 14-15 Jahre/Years / -60 kg
2025-09-27 Esad Cakirci
Loss
King Tatami - BJJ Gi Kids Pro Gi · Boys Gi / 14-15 Jahre/Years / -60 kg
2025-09-27 Joel Almas
Win
King Tatami - BJJ Gi Kids Pro Gi · Boys Gi / 14-15 Jahre/Years / -60 kg
2025-09-27 Emil Biro
Win
King Tatami - BJJ Gi Kids Pro Gi · Boys Gi / 14-15 Jahre/Years / -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 1,278

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
5 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 +2 Rating 1,278

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
5 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 +1 Rating 1,276

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
5 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 1,275

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
5 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 -1 Rating 1,275

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
Opponents
5 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 2 new matches Change +85 Rating 1,276

Rating-period composition

Rating matches
5 +2
Record
2–3 Previous month 1–2
Opponents
5 +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.
Win
March 28, 2026 Lennox Baetcke
TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI) Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
Method Submission 04:20
Marginal influence +15
Loss
March 28, 2026 Paul Weismantel
TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI) Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
Method Submission 01:11
Marginal influence -5
February 2026 No new matches Change +8 Rating 1,191

Rating-period composition

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

January 2026 No new matches Change +12 Rating 1,183

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
3 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 -1 Rating 1,171

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
3 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 No new matches Change +6 Rating 1,172

Rating-period composition

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

October 2025 No new matches Change -2 Rating 1,166

Rating-period composition

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

September 2025 3 new matches Change Starting point Rating 1,168

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 Osama Jawish
King Tatami - BJJ Gi Kids Pro Boys Gi / 14-15 Jahre/Years / -60 kg
Method Disqualification 00:29 0–0
Marginal influence -27
Loss
September 27, 2025 Esad Cakirci
King Tatami - BJJ Gi Kids Pro Boys Gi / 14-15 Jahre/Years / -60 kg
Method Points 04:00 0–2
Marginal influence -18
Win
September 27, 2025 Joel Almas
King Tatami - BJJ Gi Kids Pro Boys Gi / 14-15 Jahre/Years / -60 kg
Method Points 04:00 0–0
Marginal influence +25
Relevant matches
4
Official ranking percentile
-
Performance
-

4 weighted matches against 5 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,287
Repeated-opponent share
0.0%
Network connectivity
87.6%

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

TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI)
U18 · Counts
Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
  • Competition age 16
King Tatami - BJJ Gi Kids Pro
Does not count
Boys Gi / 14-15 Jahre/Years / -60 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 60 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

  • ≤ 60 kg 1 competition event Selected outcome
  • ≤ 66 kg 1 competition event

Registrations and outcomes

TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI)
≤ 66 kg · Counts as a competition event
Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
  • Registered weight class: -66 kg
  • Source competition limit: -66 kg

2 matches in the rating period

King Tatami - BJJ Gi Kids Pro
≤ 60 kg · Counts as a competition event
Boys Gi / 14-15 Jahre/Years / -60 kg
  • Registered weight class: -60 kg
  • Source competition limit: -60 kg

3 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 2 matches in the rating period Selected outcome

Registrations and outcomes

TMIYC - TAP ME IF YOU CAN SUBMISSION ONLY (GI & NOGI)
white · Counts as a match
Youth Men's NO-GI / White Belt (Beginner) / Teen (14-17 yrs) / -66 kg
  • Source belt category: white

2 matches in the rating period