Ryutaro Shiga
“Osorezan Mutsutaro”
- 4-2-1
- (Win - Loss - Draw)
- Country
Japan- Weight Class
- Flyweight
- Birth Date
- 1985-05-15
- Age
- 42
- Height
- 165.1 cm
- Weight
- 56.7 kg
Menu
Ryutaro Shiga (Osorezan Mutsutaro) is a Flyweight fighter from Japan. a record of 4-2-1 and 9 fights.
Of 4 career wins, 1 came by KO/TKO, 1 by submission, and 2 by decision, for a finish rate of 50%. This makes them a well-rounded fighter with both finishing and decision wins.
Over the last 5 fights, they hold a 3W-2L record. In their most recent bout, they beat Yuta Hasuike by decision.
Player Statistics
55.6%
5W-3L-1D
4
Wins
KO/TKO 1Submission 1Decision 2
20%
0%
20%
Total Fights
9
Finish Rate
20%
KO Rate
0%
Submission Rate
20%
Fight History9 total fights
D
W
W
L
W
L
W
L
W
PastRecent
Win vs Loss Methods
Win AnalysisLoss Analysis
KO/TKO
1
2
Submission
1
Decision
2
Last 5 Fights
| Opponent | Method | |
|---|---|---|
| W | Yuta Hasuike | Decision |
| L | Arashi Okada | Decision |
| W | Yoshiaki Kiryu | Decision |
| L | Hiroki Takaoka | Technical Knockout |
| W | Yoshiki Hitosugi | Submission |
Career
| Main Events | 1 |
| 1R Finishes | 1 |
| Current Win Streak | 1 |
| Max Win Streak | 2 |
| Max Loss Streak | 1 |
Basic Info
| Debut | 2017.02.24 |
| Last Fight | 2026.02.28 |
| Avg. Fight Time | 6:57 |
| Career Duration | 9y 0m |
Win Analysis4
| Method | Count | % | |
|---|---|---|---|
| KO/TKO | 1 | 25.0% | |
| └ Punch | 1 | 100.0% | |
| Submission | 1 | 25.0% | |
| └ Rear Naked Choke | 1 | 100.0% | |
| Decision | 2 | 50.0% | |
| └ Majority | 2 | 66.7% | |
| └ unanimous decision | 1 | 33.3% |
Loss Analysis2
| Method | Count | % | |
|---|---|---|---|
| KO/TKO | 2 | 100.0% | |
| └ Punch | 2 | 100.0% |
| Draw | 1 |
Finish by Round
R1
1
R2
R3
R4
R5+
Record by Year
20172
1
1
20182
1
1
20211
1
20241
1
20252
1
1
20261
1
WLDNC
Record by Promotion
| Promotion | W | L | D | NC | Total |
|---|---|---|---|---|---|
| Shooto | 5 | 3 | 1 | 0 | 9 |
Record by Weight Class
| Weight Class | W | L | D | NC | Total |
|---|---|---|---|---|---|
| Flyweight | 4 | 3 | 1 | 0 | 8 |
| Bantamweight | 1 | 0 | 0 | 0 | 1 |
Timeline
Timeline
2025
2018
2017
Match History
Pro Matches
#9
4-3-1
WIN
Shooto - Gig Tokyo 40
2026.02.28
3-4-0
Decision(Majority)
2Round 5:00
#8
4-2-1
LOSS
Shooto - Professional Shooto 2025 Vol. 9
2025.11.16
4-1-0
Decision(unanimous decision)
2Round 5:00
#7
3-2-1
WIN
Shooto - Professional Shooto 2025 Vol. 3
2025.05.18
5-8-2
Decision(Majority)
2Round 5:00
#6
3-1-1
LOSS
Shooto / Torao Nation State - Force 19
2024.03.24
7-9-6
Technical Knockout(Punch)
2Round 1:38
#5
2-1-1
WIN
Shooto - Professional Shooto 2021 Vol. 1
2021.01.31
0-0-0
Submission(Rear Naked Choke)
1Round 3:32
#4
2-0-1
LOSS
Shooto - The Shooto Okinawa Vol. 1
2018.11.25
11-7-1
Knockout(Punch)
1Round 0:25
#3
1-0-1
WIN
Shooto - Gig Tokyo 25
2018.04.22
6-10-2
Technical Knockout(Punch)
1Round 2:05
#2
0-0-1
WIN
Shooto - Gig Tokyo 23
2017.11.19
0-2-1
Decision(unanimous decision)
2Round 5:00
#1
0-0-0
DRAW
Shooto - This Is Shooto, Vol. 1
2017.02.24
0-0-0
Draw(unanimous decision)
2Round 5:00
| Result | Opponent | Event | Method | Round / Time |
|---|---|---|---|---|
WIN 4-3-1 | Yuta Hasuike 3-4-0 | Shooto - Gig Tokyo 40 2026.02.28 | Decision(Majority) | 2Round5:00 |
LOSS 4-2-1 | Arashi Okada 4-1-0 | Shooto - Professional Shooto 2025 Vol. 9 2025.11.16 | Decision(unanimous decision) | 2Round5:00 |
WIN 3-2-1 | Yoshiaki Kiryu 5-8-2 | Shooto - Professional Shooto 2025 Vol. 3 2025.05.18 | Decision(Majority) | 2Round5:00 |
LOSS 3-1-1 | Hiroki Takaoka 7-9-6 | Shooto / Torao Nation State - Force 19 2024.03.24 | Technical Knockout(Punch) | 2Round1:38 |
WIN 2-1-1 | Yoshiki Hitosugi 0-0-0 | Shooto - Professional Shooto 2021 Vol. 1 2021.01.31 | Submission(Rear Naked Choke) | 1Round3:32 |
LOSS 2-0-1 | Yuichi Miyagi 11-7-1 | Shooto - The Shooto Okinawa Vol. 1 2018.11.25 | Knockout(Punch) | 1Round0:25 |
WIN 1-0-1 | Hiroshi Roppongi 6-10-2 | Shooto - Gig Tokyo 25 2018.04.22 | Technical Knockout(Punch) | 1Round2:05 |
WIN 0-0-1 | Yoshiaki Kiryu 0-2-1 | Shooto - Gig Tokyo 23 2017.11.19 | Decision(unanimous decision) | 2Round5:00 |
DRAW 0-0-0 | Daisuke Suzuki 0-0-0 | Shooto - This Is Shooto, Vol. 1 2017.02.24 | Draw(unanimous decision) | 2Round5:00 |
Amateur Matches
#2
WIN
Decision(unanimous decision)
1Round 4:00
#1
LOSS
Decision(unanimous decision)
1Round 4:00
| Result | Opponent | Event | Method | Round / Time |
|---|---|---|---|---|
WIN | Shooto20th All-Japan Amateur Shooto Championships 2013.11.23 | Decision(unanimous decision) | 1Round4:00 | |
LOSS | Shooto20th All-Japan Amateur Shooto Championships 2013.11.23 | Decision(unanimous decision) | 1Round4:00 |
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