P Koichi Yamasaki #55
Age: 24 | Bats: L | Throws: L | Morale: Normal    
12/31/2028
BNN Index | | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P KOICHI YAMASAKI #55 - AGE: 24 - BATS: L - THROWS: L - MORALE: NORMAL
G GS Rec SV ERA IP HA HR BB K WHIP WAR
24 0 0-2 0 4.03 38.0 43 2 20 37 1.66 0.1
PITCHING RATINGS (OSA)
Pot. Overall Vs Left Vs Right Pot.
Stuff 18
Movement 22
Control 1
PITCHING RATINGS
Pitch Cur. Pot.
Fastball - 40
Slider - 30
Curveball - 39
Changeup - 31
Forkball - 43
OTHER PITCHING RATINGS
Velocity 91-93 Mph
Stamina 55
Suggested Role Strictly BP
Groundball Percentage 58 %
Hold Runners 59
Defense 16
RUN/BUNT RATINGS
Running Speed: 31
Stealing Ability: 5
Baserunning Inst.: 30
Sacrifice Bunt: 39
Bunt for Hit: 7
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
06/13/2028 @ BET Loss, 2-8 1.0 0 0 0 0 0
06/11/2028 HOU Loss, 2-8 3.2 3 1 1 0 3
06/09/2028 @ KAN Win, 8-5 1.0 3 2 2 1 0
06/04/2028 BRI Loss, 4-6 0.0 1 0 0 0 0
06/02/2028 @ STR Win, 12-10 0.0 0 0 0 1 0
06/01/2028 @ STR Win, 3-1 0.2 0 0 0 0 1
05/29/2028 BEL Loss, 8-10 0.0 1 0 0 0 0
05/25/2028 WHI Loss, 2-6 0.0 0 0 0 0 0
05/23/2028 @ WES Loss, 3-6 0.1 0 0 0 0 0
05/22/2028 @ WES Win, 3-1 0.2 0 0 0 0 0
PERSONALITY
Leader Ability:High
Loyalty:Very High
Desire f. Win:Low
Greed:Normal
Intelligence:Normal
Work Ethic:Low
Birthday:04/06/2004
Born in:Unknown
Nationality:Japanese
Height:6' 0"
Weight:190 lbs
Local Popularity:Unknown
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:5 Years
Arbitration Eligibility:Not yet eligible
Option Years:3 option years left
Contract Extension: -
Drafted:2023, 11th Pick in Round 3
SINGLE A 2028 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 24 0 0 2 0 4.03 38.0 43 18 17 2 20 37 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 5 0 0.0 24 5 15.39 10.18 8.76 4.74 4.27 1.66 100 0.1 .376        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 46 20 2 0 1 8 3 9 1 0 0 .435 .460 .543 1.003      
vs. RHB 101 23 5 1 1 10 17 28 0 1 2 .228 .350 .327 .677      
SINGLE A 2028 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
April 8 0 0 1 0 4.60 15.2 20 9 8 1 8 17  
May 10 0 0 1 0 3.38 16.0 16 6 6 1 10 16  
June 6 0 0 0 0 4.26 6.1 7 3 3 0 2 4  
Career 33 0 3 2 0 4.24 57.1 60 28 27 5 30 63  
Home 14 0 0 2 0 4.74 24.2 28 14 13 2 16 27  
Road 10 0 0 0 0 2.70 13.1 15 4 4 0 4 10  
Grass 24 0 0 2 0 4.03 38.0 43 18 17 2 20 37  
Day 7 0 0 1 0 3.29 13.2 19 6 5 1 8 12  
Night 17 0 0 1 0 4.44 24.1 24 12 12 1 12 25  
As Reliever / Substitution 24 0 0 2 0 4.03 38.0 43 18 17 2 20 37  
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+
2022 Yomiuri - COL 18 12 12 5 3 0 4.42 73.1 67 42 36 6 23 80 0 0 1.23 .303 3.74 2.3 122
2023 Yomiuri - COL 19 16 16 8 4 0 3.06 97.0 81 36 33 12 32 114 0 0 1.16 .286 3.96 2.6 168
2023 Beach City - A 19 9 0 3 0 0 4.66 19.1 17 10 10 3 10 26 0 0 1.40 .326 4.67 0.1 100
2024 West Coast - AA 20 35 35 12 12 0 6.01 185.2 237 145 124 30 101 157 0 0 1.82 .356 5.75 0.7 81
2025 West Coast - AA 21 32 0 2 1 2 5.18 33.0 34 19 19 4 20 30 0 0 1.64 .319 4.86 0.0 90
2026 West Coast - AA 22 38 0 1 0 2 3.31 35.1 35 14 13 2 23 30 0 0 1.64 .324 4.99 0.0 142
2027 West Coast - AA 23 26 0 0 1 1 4.43 42.2 47 26 21 4 41 28 0 0 2.06 .326 6.65 -0.8 104
2028 Beach City - A 24 24 0 0 2 0 4.03 38.0 43 18 17 2 20 37 0 0 1.66 .376 4.27 0.1 106
Total Double 131 35 15 14 5 5.37 296.2 353 204 177 40 185 245 0 0 1.81 .344 5.69 92.5
Total Single 33 0 3 2 0 4.24 57.1 60 28 27 5 30 63 0 0 1.57 .362 4.40 103.8
Total Pro Feeder 28 28 13 7 0 3.65 170.1 148 78 69 18 55 194 0 0 1.19 .294 3.86 147.8
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2022 Yomiuri - COL P 12 12 1 4 0 6 1 .833 73.1 0.61 -0.2 .721
2023 Beach City - A P 9 0 1 4 0 5 0 1.000 19.1 2.33 -0.2 .895
2023 Yomiuri - COL P 16 16 5 17 1 24 2 .917 97.0 2.04 +1.2 1.066
2024 West Coast - AA P 35 35 13 21 0 37 3 .919 185.2 1.65 +0.6 .962
2025 West Coast - AA P 24 0 4 0 0 4 0 1.000 33.0 1.09 +0.2 1.052
2026 West Coast - AA P 28 0 1 6 1 7 0 1.000 35.1 1.78 +0.2 1.059
2027 West Coast - AA P 24 0 5 2 0 7 0 1.000 42.2 1.48 -0.2 .704
2028 Beach City - A P 20 0 4 5 0 9 0 1.000 38.0 2.13 +0.2 1.038
TOTAL P 168 63 34 59 2 99 6 .939 524.1 1.60 +1.8 .962
PLAYER HISTORY
06/07/2022 Joined the Yomiuri Giants.
08/09/2022 Injured (sore elbow), day-to-day for 4 days.
01/01/2023 OSA scouting updated ratings (potential): Stuff: - (50); Movement: - (43); Control: - (46).
05/18/2023 Was selected to the 2023 NIPPON BASEBALL LEAGUE All-Star Game.
06/02/2023 Injured (wrist soreness), day-to-day for 6 days.
06/07/2023 Drafted in the 2023 first-year player draft (Round 3, Pick 11, 66th overall pick) by the Manhattan Beach Patriots.
06/27/2023 Released by the Yomiuri Giants.
06/27/2023 Signed a minor league contract with the Manhattan Beach Patriots organization with a signing bonus of $320,000.
01/01/2024 OSA scouting updated ratings (potential): Stuff: - (40); Movement: - (39); Control: - (49).
09/18/2024 Injured (tender shoulder), day-to-day for 5 days.
01/01/2025 OSA scouting updated ratings (potential): Stuff: - (23); Movement: - (39); Control: - (30).
06/17/2025 Injured (shoulder inflammation), out for 3-4 months.
09/14/2025 Suffered setback in recovery from injury, will miss another 2 weeks.
09/15/2025 Suffered setback in recovery from injury, will miss another 2 weeks.
01/01/2026 OSA scouting updated ratings (potential): Stuff: - (34); Movement: - (37); Control: - (10).
09/18/2026 Injured (torn rotator cuff), out for 8-9 months.
01/01/2027 OSA scouting updated ratings (potential): Stuff: - (25); Movement: - (38); Control: - (1).
07/15/2027 Suspended 2 games after ejection following a brawl.
01/01/2028 OSA scouting updated ratings (potential): Stuff: - (23); Movement: - (30); Control: - (1).
07/10/2028 Released by the Manhattan Beach organization.
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