Bantamweight3 rounds scheduled
RESULT
Ryoma Shishimoto def. Ryusei Ashizawa (Submission)
Submission · Round 1 · 0:25
2-4-0
Wednesday, December 31, 2025
Saitama Super Arena, Saitama, Japan
Ryoma Shishimoto defeated Ryusei Ashizawa by Submission in round 1 (0:25) in the Bantamweight bout of Rizin FF - Shiwasu no Cho Tsuwamono Matsuri, held Wednesday, December 31, 2025 at Saitama Super Arena, Saitama.
Betting Odds
Ryoma Shishimoto
+199
33% implied win probability
Open: +160Best: +210
Ryusei Ashizawa
-274
73% implied win probability
Open: -176Best: -220
Average moneyline across 5 sportsbooks.
| Sportsbook | Ryoma Shishimoto | Ryusei Ashizawa |
|---|---|---|
| BetOnline | +185 | -220 |
| Betway | +210 | -300 |
| Bovada | +190 | -260 |
| MyBookie | +206 | -310 |
| Stake | +205 | -303 |
Odds are for information only. · Odds data: fightodds.io
Frequently asked questions
Who won Ryoma Shishimoto vs Ryusei Ashizawa?
Ryoma Shishimoto defeated Ryusei Ashizawa by Submission in round 1 (0:25) in the Bantamweight bout of Rizin FF - Shiwasu no Cho Tsuwamono Matsuri, held Wednesday, December 31, 2025 at Saitama Super Arena, Saitama.
Referee
Naoya Uematsu
Pre-fight comparison▾
Win probability
Ryoma Shishimoto 53%47% Ryusei Ashizawa
What the model gave each fighter going into the fight, from their pre-fight UFCalendar Power Index ratings. See the full Power Index
Tale of the Tape
4-1-0
Record
2-4-0
1529
Power Index rating
1509
0
Win Streak
0
29
Age
31
5'7"
170 cm
Height
5'9"
175 cm
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Reach
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Stance
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Bantamweight
Weight Class
Bantamweight
Japan
Nationality
Japan
Striking Profile
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SLpM
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Str. Acc.
-
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SApM
-
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Str. Def.
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Grappling Profile
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TD Avg.
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TD Acc.
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TD Def.
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Sub. Avg.
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Recent form (last 5 fights)
Ryoma Shishimoto · 4-1
Ryusei Ashizawa · 2-3