P Masato Koyama #24
Houston Sting (DAL) A
Age: 20 | Bats: L | Throws: L | Morale: Good    
12/31/2026
BNN Index | A | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P MASATO KOYAMA #24 - AGE: 20 - BATS: L - THROWS: L - MORALE: GOOD
G GS Rec SV ERA IP HA HR BB K WHIP WAR
14 0 3-1 0 4.91 29.1 30 1 15 44 1.53 0.4
PITCHING RATINGS (OSA)
Pot. Overall Vs Left Vs Right Pot.
Stuff 14
Movement 34
Control 53
PITCHING RATINGS
Pitch Cur. Pot.
Fastball - 35
Slider - 30
Changeup - 68
 
 
OTHER PITCHING RATINGS
Velocity 86-88 Mph
Stamina 44
Suggested Role Starter
Groundball Percentage 56 %
Hold Runners 100
Defense 48
RUN/BUNT RATINGS
Running Speed: 15
Stealing Ability: 6
Baserunning Inst.: 11
Sacrifice Bunt: 64
Bunt for Hit: 1
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
07/05/2027 @ EUG Loss, 0-0 1.1 1 1 0 1 1
06/30/2027 @ NEW Loss, 0-0 1.0 1 1 1 1 1
05/25/2027 @ CHI Loss, 0-0 2.0 5 4 4 3 2 Loss
05/16/2027 @ BAL Loss, 0-0 1.1 1 3 3 3 1
05/09/2027 @ CHI Loss, 0-0 3.0 0 0 0 0 3 Win
05/03/2027 @ SAN Loss, 0-0 3.1 1 0 0 0 7 Win
04/25/2027 @ VIC Loss, 0-0 3.0 2 0 0 0 4 Win
04/15/2027 @ EUG Loss, 0-0 2.1 4 3 3 2 4
04/12/2027 @ NEW Loss, 0-0 2.0 1 0 0 0 6
04/08/2027 @ CHI Loss, 0-0 2.1 2 1 1 2 3
PERSONALITY
Leader Ability:Low
Loyalty:Very High
Desire f. Win:Low
Greed:High
Intelligence:Very High
Work Ethic:High
Birthday:11/08/2006
Born in:Tsuchiura, IBA
Nationality:Japanese
Height:5' 11"
Weight:175 lbs
Local Popularity:Unknown
National Pop.:Unknown
STATUS
Contract:Minor League Contract
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:-
SINGLE A 2026 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 14 0 3 1 0 4.91 29.1 30 17 16 1 15 44 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF R/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 0 0 0.0 14 1 14.73 9.20 13.50 4.60 3.20 1.53 81 0.4 .408        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 28 6 0 0 0 3 2 15 0 0 2 .214 .313 .214 .527      
vs. RHB 87 24 3 0 1 14 13 29 1 0 1 .276 .373 .345 .717      
SINGLE A 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
April 4 0 1 0 0 3.72 9.2 9 4 4 0 4 17  
May 4 0 2 1 0 6.52 9.2 7 7 7 0 6 13  
June 1 0 0 0 0 9.00 1.0 1 1 1 0 1 1  
July 1 0 0 0 0 0.00 1.1 1 1 0 0 1 1  
August 2 0 0 0 0 13.50 2.0 6 3 3 0 1 3  
September 2 0 0 0 0 1.59 5.2 6 1 1 1 2 9  
Career 14 0 3 1 0 4.91 29.1 30 17 16 1 15 44  
Road 1 0 0 0 0 2.70 3.1 6 1 1 1 0 4  
Grass 13 0 3 1 0 5.33 27.0 30 17 16 1 13 39  
Turf 1 0 0 0 0 0.00 2.1 0 0 0 0 2 5  
Day 6 0 2 0 0 3.07 14.2 16 5 5 1 3 19  
Night 8 0 1 1 0 6.75 14.2 14 12 11 0 12 25  
As Reliever / Substitution 14 0 3 1 0 4.91 29.1 30 17 16 1 15 44  
NIPPON BASEBALL LEAGUE 2026 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 12 12 2 4 0 5.19 59.0 64 36 34 6 15 66 0 0.0 0 2 16.7
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 12.51 9.76 10.07 2.29 3.72 1.34 69 1.9 .345        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 38 10 2 0 0 2 4 9 0 0 1 .263 .349 .316 .665      
vs. RHB 201 54 9 2 6 34 11 57 1 0 2 .269 .312 .423 .735      
NIPPON BASEBALL LEAGUE 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
Last Year 9 9 3 2 0 2.96 45.2 52 18 15 4 11 47  
Career 21 21 5 6 0 4.21 104.2 116 54 49 10 26 113  
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+
2025 Yomiuri - COL 18 9 9 3 2 0 2.96 45.2 52 18 15 4 11 47 0 0 1.38 .356 3.26 1.6 179
2026 Yomiuri - COL 19 12 12 2 4 0 5.19 59.0 64 36 34 6 15 66 0 0 1.34 .345 3.72 1.9 105
2026 Houston - A 19 14 0 3 1 0 4.91 29.1 30 17 16 1 15 44 0 0 1.53 .408 3.20 0.4 81
Total A 14 0 3 1 0 4.91 29.1 30 17 16 1 15 44 0 0 1.53 .408 3.20 81.1
Total Pro Feeder 21 21 5 6 0 4.21 104.2 116 54 49 10 26 113 0 0 1.36 .350 3.52 137.3
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2025 Yomiuri - COL P 9 9 1 7 0 8 0 1.000 45.2 1.58 +0.4 1.031
2026 Houston - A P 13 0 1 3 0 4 0 1.000 29.1 1.23 +0.2 1.061
2026 Yomiuri - COL P 12 12 3 8 3 11 0 1.000 59.0 1.68 0.0 1.000
TOTAL P 34 21 5 18 3 23 0 1.000 134.0 1.54 +0.6 1.020
PLAYER HISTORY
06/07/2025 Joined the Yomiuri Giants.
01/01/2026 OSA scouting updated ratings (potential): Stuff: - (11); Movement: - (30); Control: - (60).
06/07/2026 Drafted in the 2026 first-year player draft (Round 6, Pick 14, 161st overall pick) by the Jacksonville Jacks.
06/07/2026 Went undrafted and became a free agent.
06/10/2026 Signed a minor league contract with the Dallas Texans organization.
Tuesday, March 15th, 2016 - OOTP Baseball 16.11 Build 43