P Mitsuzuka Koyama #19
Age: 20 | Bats: R | Throws: R | Morale: Great    
12/31/2025
BNN Index | | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P MITSUZUKA KOYAMA #19 - AGE: 20 - BATS: R - THROWS: R - MORALE: GREAT
G GS Rec SV ERA IP HA HR BB K WHIP WAR
9 9 5-0 0 3.83 44.2 42 5 20 36 1.39 0.8
PITCHING RATINGS (OSA)
Pot. Overall Vs Left Vs Right Pot.
Stuff 10
Movement 37
Control 57
PITCHING RATINGS
Pitch Cur. Pot.
Fastball - 50
Slider - 52
Changeup - 14
 
 
OTHER PITCHING RATINGS
Velocity 88-90 Mph
Stamina 42
Suggested Role Strictly BP
Groundball Percentage 58 %
Hold Runners 33
Defense 58
RUN/BUNT RATINGS
Running Speed: 14
Stealing Ability: 10
Baserunning Inst.: 15
Sacrifice Bunt: 78
Bunt for Hit: 7
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
05/06/2025 HOK Win, 4-3 X 3.1 1 0 0 1 4
04/27/2025 @ TOH Win, 7-0 X 5.2 2 0 0 2 4 Win
04/18/2025 CHI Win, 9-5 X 6.0 10 3 3 1 5 Win
04/13/2025 @ HAN Win, 6-0 X 5.2 4 0 0 3 6 Win
04/08/2025 @ HOK Loss, 8-9 X 3.2 3 5 5 1 1
03/31/2025 HOK Win, 5-3 X 5.0 8 3 3 2 3 Win
03/25/2025 @ TOH Win, 8-7 X 4.2 7 5 5 3 3
03/19/2025 CHI Loss, 6-7 X 5.1 3 2 2 3 4
03/07/2025 @ CHI Win, 9-1 X 5.1 4 1 1 4 6 Win
PERSONALITY
Leader Ability:High
Loyalty:Normal
Desire f. Win:Low
Greed:Normal
Intelligence:Low
Work Ethic:Normal
Birthday:12/28/2005
Born in:Kakogawa, HYO
Nationality:Japanese
Height:6' 1"
Weight:185 lbs
Local Popularity:Fair
National Pop.:Unknown
STATUS
Contract:None, Free Agent
Salary:-
Signed Through:-
Major Service:None, None
Service This Yr:None
40-Man Service:None, None
Pro Service:None
Arbitration Eligibility:Not yet eligible
Option Years:3 option years left
Contract Extension: -
Drafted:-
NIPPON BASEBALL LEAGUE 2025 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 9 9 5 0 0 3.83 44.2 42 19 19 5 20 36 0 0.0 0 1 11.1
Pitching SVO BS SV% RA GF R/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 0 0 0.0 0 0 12.90 8.46 7.25 4.03 4.84 1.39 91 0.8 .298        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 54 12 3 0 0 6 6 13 0 0 1 .222 .311 .278 .589      
vs. RHB 111 30 4 1 5 13 14 23 0 0 1 .270 .357 .459 .817      
NIPPON BASEBALL LEAGUE 2025 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
March 4 4 2 0 0 4.87 20.1 22 11 11 2 12 16  
April 4 4 3 0 0 3.43 21.0 19 8 8 3 7 16  
May 1 1 0 0 0 0.00 3.1 1 0 0 0 1 4  
Last Year 8 8 3 2 0 4.27 46.1 49 22 22 4 12 32  
Career 17 17 8 2 0 4.05 91.0 91 41 41 9 32 68  
Home 4 4 2 0 0 3.66 19.2 22 8 8 1 7 16  
Road 5 5 3 0 0 3.96 25.0 20 11 11 4 13 20  
Grass 8 8 5 0 0 3.07 41.0 39 14 14 3 19 35  
Turf 1 1 0 0 0 12.27 3.2 3 5 5 2 1 1  
Day 6 6 3 0 0 4.50 30.0 27 15 15 4 14 21  
Night 3 3 2 0 0 2.45 14.2 15 4 4 1 6 15  
As Starter 9 9 5 0 0 3.83 44.2 42 19 19 5 20 36  
CAREER PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
CAREER MINOR LEAGUE PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2024 Fukuoka SoftBank - COL 18 8 8 3 2 0 4.27 46.1 49 22 22 4 12 32 0 0 1.32 .315 4.22 1.2 126
2025 Fukuoka SoftBank - COL 19 9 9 5 0 0 3.83 44.2 42 19 19 5 20 36 0 0 1.39 .298 4.84 0.8 139
Total Pro Feeder 17 17 8 2 0 4.05 91.0 91 41 41 9 32 68 0 0 1.35 .307 4.53 132.2
CAREER POSTSEASON PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2024 Fukuoka SoftBank - Pro Feeder 18 1 1 0 0 0 9.64 4.2 8 6 5 0 3 0 0 0 2.36 .381 0.00 0.0 0
Total Pro Feeder 1 1 0 0 0 9.64 4.2 8 6 5 0 3 0 0 0 2.36 .381 4.86 55.9
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2024 Fukuoka SoftBank - COL P 8 8 2 8 0 10 0 1.000 46.1 1.94 +0.4 1.042
2025 Fukuoka SoftBank - COL P 9 9 4 9 1 13 0 1.000 44.2 2.62 +0.4 1.031
TOTAL P 17 17 6 17 1 23 0 1.000 91.0 2.27 +0.9 1.036
PLAYER HISTORY
06/07/2024 Joined the Fukuoka SoftBank Hawks.
09/09/2024 Wins the 2024 NIPPON BASEBALL LEAGUE Japan Series Championship with the Fukuoka SoftBank Hawks!
01/01/2025 OSA scouting updated ratings (potential): Stuff: - (9); Movement: - (34); Control: - (57).
05/06/2025 Injured (hamstring strain), out for 3 months.
06/07/2025 Went undrafted and became a free agent.
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