P Seiichi Yamaguchi #17
Age: 20 | Bats: L | Throws: L | Morale: Normal
06/04/2025
OA: 20 POT: 35
P SEIICHI YAMAGUCHI #17 - AGE: 20 - BATS: L - THROWS: L - MORALE: NORMAL
G GS Rec SV ERA IP HA HR BB K WHIP WAR
11 8 3-2 0 5.74 42.1 66 6 12 19 1.84 0.5
PITCHING RATINGS (OSA)
Overall Pot. Overall Vs Left Vs Right Pot.
Stuff 25 25 25 40
Movement 20 20 20 45
Control 30 30 30 70
PITCHING RATINGS
Pitch Cur. Pot.
Fastball 35 40
Curveball 30 45
Changeup 20 45
Forkball 30 45
 
OTHER PITCHING RATINGS
Velocity 90-92 Mph
Stamina 30
Suggested Role Bullpen
Type Flyball Pitcher
Hold Runners 70
Defense 40
RUN/BUNT RATINGS
Running Speed: 45
Stealing Ability: 20
Baserunning Inst.: 35
Sacrifice Bunt: 65
Bunt for Hit: 25
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
06/01/2025 SPQ Win, 6-1 X 5.0 8 1 1 0 4 Win
05/26/2025 @ ABD Loss, 6-10 X 5.0 8 5 5 1 2
05/21/2025 @ FRA Loss, 10-12 X 3.2 8 5 4 2 1
05/14/2025 @ PLY Win, 10-5 X 6.0 9 2 2 0 1
05/09/2025 WB Loss, 4-17 X 4.2 5 4 4 3 2 Loss
05/03/2025 @ TLC Win, 5-4 X 5.2 7 0 0 0 3 Win
04/28/2025 @ SPQ Loss, 2-7 X 3.1 7 5 5 4 0 Loss
04/21/2025 ABD Win, 16-5 X 5.1 9 5 5 1 2 Win
04/16/2025 @ BUF Loss, 7-19 1.1 3 1 0 1 1
04/12/2025 FRA Loss, 2-7 1.0 2 1 1 0 2
PERSONALITY
A solid teammate.
Personality Class: Unknown
Birthday:05/31/2005
Born in:Saiki, OIT
Nationality:Japanese
Height:6' 7"
Weight:200 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:2 Years
Arbitration Eligibility:Not yet eligible
Option Years:3 option years left
Contract Extension: -
Drafted:-
ABA ROOKIE LEAGUE 2025 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 11 8 3 2 0 5.74 42.1 66 29 27 6 12 19 0 0.0 0 1 12.5
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 0 0 0.0 3 1 17.01 14.03 4.04 2.55 6.46 1.84 102 0.5 .368        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 50 17 3 1 1 7 4 3 0 0 1 .340 .400 .500 .900      
vs. RHB 137 49 11 0 5 22 8 16 1 2 1 .358 .395 .547 .942      
ABA ROOKIE LEAGUE 2025 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
Last Week 2 2 1 0 0 5.40 10.0 16 6 6 0 1 6  
April 5 2 1 1 0 8.03 12.1 21 12 11 2 6 6  
May 5 5 1 1 0 5.40 25.0 37 16 15 4 6 9  
June 1 1 1 0 0 1.80 5.0 8 1 1 0 0 4  
Last Year 25 6 3 2 1 8.63 57.1 86 57 55 18 22 41  
Career 36 14 6 4 1 7.40 99.2 152 86 82 24 34 60  
Home 4 3 2 1 0 6.19 16.0 24 11 11 4 4 10  
Road 7 5 1 1 0 5.47 26.1 42 18 16 2 8 9  
Grass 10 7 2 2 0 6.63 36.2 59 29 27 6 12 16  
Turf 1 1 1 0 0 0.00 5.2 7 0 0 0 0 3  
Day 3 2 2 0 0 1.54 11.2 17 2 2 1 0 9  
Night 8 6 1 2 0 7.34 30.2 49 27 25 5 12 10  
As Starter 8 8 3 2 0 6.05 38.2 61 27 26 5 11 15  
As Reliever / Substitution 3 0 0 0 0 2.45 3.2 5 2 1 1 1 4  
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 Long Island - R 19 25 6 3 2 1 8.63 57.1 86 57 55 18 22 41 0 0 1.88 .354 7.35 -0.1 72
2025 Long Island - R 20 11 8 3 2 0 5.74 42.1 66 29 27 6 12 19 0 0 1.84 .368 6.46 0.5 109
Total AR 36 14 6 4 1 7.40 99.2 152 86 82 24 34 60 0 0 1.87 .361 6.97 84.0
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2025 Long Island - R P 11 8 2 2 0 4 0 1.000 42.1 0.85 +1.0 2.022
TOTAL P 11 8 2 2 0 4 0 1.000 42.1 0.85 +1.0 2.022
PLAYER HISTORY
04/30/2022 Signed a minor league contract out of Japan with the Boston Whistlers organization.
01/01/2023 OSA scouting updated ratings (potential): Stuff: 30 (35); Movement: 30 (40); Control: 35 (50).
01/01/2023 OSA scouting updated ratings (potential): Stuff: 30 (35); Movement: 30 (40); Control: 35 (50).
01/01/2024 OSA scouting updated ratings (potential): Stuff: 20 (40); Movement: 20 (40); Control: 30 (65).
01/01/2025 OSA scouting updated ratings (potential): Stuff: 30 (40); Movement: 20 (45); Control: 30 (75).
Wednesday, January 28th , 2026 - OOTP Baseball 26.8 Build 82