3B Koki Yamashita #66
YDNA BayStars NPB
Age: 32 | Bats: L | Throws: R | Morale: Very Unhappy
07/10/2025
BNN Index | NPB | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
3B KOKI YAMASHITA #66 - AGE: 32 - BATS: L - THROWS: R - MORALE: VERY UNHAPPY
G AB H 2B 3B HR RBI BB K AVG OBP SLG SB WAR
67 97 18 4 1 0 7 10 22 .186 .259 .247 4 -0.7
BATTING RATINGS (OSA)
Overall Pot. Overall Vs Left Vs Right Pot.  
Contact 45 45 45 45
Gap 50 50 50 50
Power 55 50 55 55
Eye 45 40 45 45
Avoid K's 55 50 55 55
FIELDING RATINGS
Catcher Infield Outfield
Range: - 50 50
Errors: - 60 45
Arm: 20 50 45
Turn DP: - 55 -
Framing: 20 - -
POSITION RATINGS
Pitcher: - Shortstop: -
Catcher: - Left Field: 25
1st Base: 45 Center Field: -
2nd Base: 40 Right Field: 25
3rd Base: 45
       
RUN/BUNT
Running Speed: 50
Stealing Aggressiveness: 40
Stealing Ability: 60
Baserunning Inst.: 50
Sacrifice Bunt: 60
Bunt for Hit: 45
   
GAME LOG, LAST 10 GAMES
Date Vs. Result AB R H BI HR BB K SB
07/09/2025 HAN Loss, 0-3 1 0 0 0 0 0 0 0
07/08/2025 HAN Loss, 2-5 1 0 0 0 0 0 0 0
07/06/2025 @ YAK Win, 6-2 1 0 0 0 0 0 1 0
07/05/2025 @ YAK Win, 2-1 0 0 0 0 0 1 0 0
07/04/2025 @ YAK Win, 5-1 1 0 1 0 0 0 0 1
07/03/2025 YOM Win, 7-5 3 0 1 0 0 0 1 0
07/02/2025 YOM Loss, 3-5 1 1 1 0 0 0 0 0
07/01/2025 YOM Loss, 5-7 1 0 0 0 0 0 1 0
06/29/2025 @ HIRO Loss, 1-2 0 0 0 0 0 1 0 0
06/28/2025 @ HIRO Win, 10-1 0 0 0 0 0 0 0 0
PERSONALITY
Nothing stands out about Yamashita.
High: Adaptability
Birthday:01/31/1993
Born in:Kimitsu, CHI
Nationality:Japanese
Height:5' 8"
Weight:185 lbs
Local Popularity:Insignificant
National Pop.:Insignificant
STATUS
Contract:Major League Contract
Salary:Y600,000
Signed Through:2025 Season
Major Service:8 Years, 47 Days
Service This Yr:104 Days
40-Man Service:8 Years, 74 Days
Pro Service:9 Years
Arbitration Eligibility:Not eligible, free agent after contract expires!
Option Years:1 option year left
Contract Extension: -
Drafted:-
JAPAN PROFESSIONAL BASEBALL LEAGUE 2025 BATTING STATS
Batting G AB H 2B 3B HR RBI R BB K AVG OBP SLG OPS WOBA ISO wRC+
Overall 67 97 18 4 1 0 7 7 10 22 .186 .259 .247 .507 .236 .062 41
Batting GS PA HP IW CI GDP SH SF TB EBH SB CS SB% RC RC/27 WAR  
Overall 15 108 0 1 0 6 0 1 24 5 4 0 100.0 5.9 1.85 -0.7  
Batting   AB H 2B 3B HR RBI R BB K SF SH HP AVG OBP SLG OPS
Versus Left   18 1 1 0 0 0 1 2 5 0 0 0 .056 .150 .111 .261
Versus Right   79 17 3 1 0 7 6 8 17 1 0 0 .215 .284 .278 .563
Batting   AB H 2B 3B HR RBI R BB K SF SH HP AVG OBP SLG OPS
This Week   2 0 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000
Last Week   7 3 0 0 0 0 1 1 3 0 0 0 .429 .500 .429 .929
March   2 0 0 0 0 0 0 0 1 0 0 0 .000 .000 .000 .000
April   36 7 1 1 0 3 2 1 6 0 0 0 .194 .216 .278 .494
May   26 5 3 0 0 2 3 5 4 0 0 0 .192 .323 .308 .630
June   24 3 0 0 0 2 1 3 8 1 0 0 .125 .214 .125 .339
July   9 3 0 0 0 0 1 1 3 0 0 0 .333 .400 .333 .733
Spring Training   47 14 2 0 2 8 3 3 11 0 0 0 .298 .340 .468 .808
Last Year   126 30 4 0 4 19 16 13 21 1 0 0 .238 .307 .365 .672
2 Years Ago   117 38 10 0 4 29 14 6 29 0 0 1 .325 .363 .513 .876
Career   917 213 45 2 18 94 86 52 195 3 11 1 .232 .273 .345 .618
Home   49 9 1 0 0 6 4 6 13 0 0 0 .184 .273 .204 .477
Road   48 9 3 1 0 1 3 4 9 1 0 0 .188 .245 .292 .537
Grass   61 9 1 0 0 6 4 8 15 0 0 0 .148 .246 .164 .410
Turf   36 9 3 1 0 1 3 2 7 1 0 0 .250 .282 .389 .671
Day   39 8 2 1 0 1 3 5 8 0 0 0 .205 .295 .308 .603
Night   58 10 2 0 0 6 4 5 14 1 0 0 .172 .234 .207 .441
As Starter   48 10 4 1 0 4 5 5 8 1 0 0 .208 .278 .333 .611
As Reliever / Substitution   49 8 0 0 0 3 2 5 14 0 0 0 .163 .241 .163 .404
Pinch Hitting   41 6 0 0 0 1 2 5 12 0 0 0 .146 .239 .146 .385
Close/Late   35 7 1 0 0 2 3 4 8 0 0 0 .200 .282 .229 .511
Inning 1-3   14 3 1 1 0 3 3 2 1 1 0 0 .214 .294 .429 .723
Inning 4-6   32 5 2 0 0 2 0 4 11 0 0 0 .156 .250 .219 .469
Inning 7-9   49 10 1 0 0 2 4 4 9 0 0 0 .204 .264 .224 .489
Extra Innings   2 0 0 0 0 0 0 0 1 0 0 0 .000 .000 .000 .000
0 Outs   37 4 0 0 0 0 3 1 4 0 0 0 .108 .132 .108 .240
1 Outs   30 8 2 1 0 1 4 5 8 1 0 0 .267 .361 .400 .761
2 Outs   30 6 2 0 0 6 0 4 10 0 0 0 .200 .294 .267 .561
Scoring Position   23 5 1 0 0 7 2 4 8 1 0 0 .217 .321 .261 .582
Bases Empty   52 10 3 1 0 0 5 6 11 0 0 0 .192 .276 .288 .564
Runner on 1st   22 3 0 0 0 0 0 0 3 0 0 0 .136 .136 .136 .273
Runner on 2nd   9 1 0 0 0 1 1 2 4 0 0 0 .111 .273 .111 .384
Runner on 3rd   2 0 0 0 0 0 0 1 1 0 0 0 .000 .333 .000 .333
Runner on 1st & 2nd   8 3 1 0 0 3 1 0 2 0 0 0 .375 .375 .500 .875
Runner on 1st & 3rd   2 0 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000
Runner on 2nd & 3rd   1 1 0 0 0 3 0 1 0 1 0 0 1.000 .667 1.000 1.667
Bases Loaded   1 0 0 0 0 0 0 0 1 0 0 0 .000 .000 .000 .000
Two Strikes   47 4 0 0 0 0 4 7 22 0 0 0 .085 .204 .085 .289
First Pitch   11 3 1 1 0 4 2 1 0 1 0 0 .273 .308 .545 .853
Count 0-1   7 2 1 0 0 0 1 0 0 0 0 0 .286 .286 .429 .714
Count 0-2   7 0 0 0 0 0 0 0 7 0 0 0 .000 .000 .000 .000
Count 1-0   14 4 1 0 0 3 0 0 0 0 0 0 .286 .286 .357 .643
Count 1-1   7 2 1 0 0 0 0 0 0 0 0 0 .286 .286 .429 .714
Count 1-2   15 3 0 0 0 0 3 0 6 0 0 0 .200 .200 .200 .400
Count 2-0   6 2 0 0 0 0 0 0 0 0 0 0 .333 .333 .333 .667
Count 2-1   3 0 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000
Count 2-2   16 1 0 0 0 0 0 0 6 0 0 0 .062 .062 .062 .125
Count 3-0   0 0 0 0 0 0 0 1 0 0 0 0 .000 1.000 .000 1.000
Count 3-1   2 1 0 0 0 0 0 1 0 0 0 0 .500 .667 .500 1.167
Full Count   9 0 0 0 0 0 1 7 3 0 0 0 .000 .438 .000 .438
Behind in Count   29 5 1 0 0 0 4 0 13 0 0 0 .172 .172 .207 .379
Ahead in Count   25 7 1 0 0 3 0 2 0 0 0 0 .280 .333 .320 .653
Batting 2nd   4 1 0 0 0 2 0 0 1 0 0 0 .250 .250 .250 .500
Batting 3rd   3 1 0 0 0 0 0 0 1 0 0 0 .333 .333 .333 .667
Batting 6th   2 1 0 0 0 0 0 0 0 0 0 0 .500 .500 .500 1.000
Batting 7th   19 5 2 1 0 3 2 4 2 0 0 0 .263 .391 .474 .865
Batting 8th   21 3 1 0 0 1 2 1 3 1 0 0 .143 .174 .190 .364
Batting 9th   48 7 1 0 0 1 3 5 15 0 0 0 .146 .226 .167 .393
Low Leverage   41 8 3 1 0 2 4 4 10 0 0 0 .195 .267 .317 .584
Medium Leverage   26 2 0 0 0 1 2 5 4 1 0 0 .077 .219 .077 .296
High Leverage   29 8 1 0 0 4 1 1 7 0 0 0 .276 .300 .310 .610
CAREER BATTING STATS
Year/Team/League Age G AB H 2B 3B HR RBI R BB HP SF K SB CS AVG OBP SLG OPS OPS+ wRC+ WAR
2015 YDNA - NPB 22 23 42 10 2 0 0 2 2 0 0 0 12 0 1 .238 .238 .286 .524 50 40 -0.2
2016 YDNA - NPB 23 62 98 22 2 1 0 7 11 1 0 1 18 3 1 .224 .230 .265 .495 42 31 -0.4
2017 YDNA - NPB 24 21 21 3 2 0 0 0 3 0 0 0 6 0 0 .143 .143 .238 .381 8 -12 -0.2
2018 YDNA - NPB 25 21 63 14 2 0 1 3 3 0 0 0 13 1 0 .222 .222 .302 .524 49 39 -0.2
2020 YO - NPB 27 39 43 9 2 0 0 1 2 3 0 0 7 0 0 .209 .261 .256 .517 48 44 -0.1
2021 Yokohama DeNA - NPB 28 111 167 35 10 0 6 14 15 11 0 0 33 2 0 .210 .258 .377 .636 77 70 -0.2
2022 Yokohama DeNA - NPB 29 101 143 34 7 0 3 12 13 8 0 0 34 0 1 .238 .278 .350 .628 75 70 -0.4
2023 YDNA - NPB 30 70 117 38 10 0 4 29 14 6 1 0 29 1 1 .325 .363 .513 .876 158 160 1.5
2024 YDNA - NPB 31 103 126 30 4 0 4 19 16 13 0 1 21 1 1 .238 .307 .365 .672 94 90 0.4
2025 YDNA - NPB 32 67 97 18 4 1 0 7 7 10 0 1 22 4 0 .186 .259 .247 .507 43 41 -0.7
Total NPB 618 917 213 45 2 18 94 86 52 1 3 195 12 5 .232 .273 .345 .618 76 71 -0.5
CAREER MINOR LEAGUE BATTING STATS
Year/Team/League Age G AB H 2B 3B HR RBI R BB HP SF K SB CS AVG OBP SLG OPS OPS+ wRC+ WAR
2015 YDNA (Ni-Gun) - AA 22 75 283 70 13 3 3 25 28 25 4 6 49 8 3 .247 .311 .346 .658 85 80 0.4
2016 YDNA (Ni-Gun) - AA 23 32 117 35 8 2 1 12 13 7 0 0 21 3 0 .299 .339 .427 .766 114 115 0.7
2017 YDNA (Ni-Gun) - AA 24 74 221 65 8 0 4 14 20 14 2 2 31 14 5 .294 .339 .385 .724 103 103 1.0
2018 YDNA (Ni-Gun) - AA 25 76 237 72 15 2 8 25 36 15 1 0 31 7 8 .304 .348 .485 .833 133 134 1.7
2019 YDNA (Ni-Gun) - AA 26 91 281 73 11 2 6 36 39 19 2 2 47 9 4 .260 .309 .377 .686 92 88 0.7
2020 CH (Ni-Gun) - AA 27 22 62 20 5 1 1 11 6 2 1 2 5 1 0 .323 .343 .484 .827 131 128 0.5
2022 Yokohama (Ni-Gun) - AA 29 9 29 11 2 0 1 6 7 3 0 0 4 0 0 .379 .438 .552 .989 138 111 0.1
2023 YDNA (Ni-Gun) - AA 30 43 161 50 7 2 2 19 21 14 1 1 22 4 0 .311 .367 .416 .783 122 118 0.8
Total NGN 422 1391 396 69 12 26 148 170 99 11 13 210 46 20 .285 .334 .408 .742 107 105
CAREER POSTSEASON BATTING STATS
Year/Team/League Age G AB H 2B 3B HR RBI R BB HP SF K SB CS AVG OBP SLG OPS OPS+ wRC+ WAR
2021 Yokohama DeNA - NPB 28 3 2 0 0 0 0 0 1 1 0 0 0 0 0 .000 .333 .000 .333 1 41 -0.2
2022 Yokohama DeNA - NPB 29 1 2 1 1 0 0 1 0 0 0 0 0 0 0 .500 .500 1.000 1.500 310 320 -0.2
2023 YDNA - NPB 30 3 8 1 0 0 0 3 0 3 0 1 2 0 1 .125 .333 .125 .458 40 58 -0.1
Total NPB 7 12 2 1 0 0 4 1 4 0 1 2 0 1 .167 .353 .250 .603 65 86
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2020 YDNA - INT 1B 5 0 18 0 2 18 0 1.000 0.0 0.00 0.0 .000
2020 YDNA - INT 2B 3 0 5 3 2 8 0 1.000 0.0 0.00 0.0 .000
2020 YDNA - INT 3B 2 0 0 0 0 0 0 .000 0.0 0.00 0.0 .000
2021 Yokohama DeNA - INT 1B 3 2 18 0 2 19 1 .947 22.0 7.36 -0.4 .769
2021 Yokohama DeNA - INT 2B 7 0 3 0 0 3 0 1.000 10.0 2.70 -0.6 .000
2021 Yokohama DeNA - INT 3B 20 13 7 19 3 28 2 .929 130.0 1.80 -0.5 .953
2022 Yokohama (Ni-Gun) - AA 1B 5 5 41 3 5 44 0 1.000 41.0 9.66 -0.5 1.034
2022 Yokohama DeNA - INT 1B 4 0 13 1 2 15 1 .933 9.2 13.03 -0.3 .760
2022 Yokohama (Ni-Gun) - AA 2B 1 0 0 0 0 0 0 .000 2.0 0.00 0.0 .000
2022 Yokohama DeNA - INT 2B 2 0 1 0 0 1 0 1.000 1.1 6.75 0.0 .000
2022 Yokohama (Ni-Gun) - AA 3B 3 2 0 2 1 3 1 .667 19.0 0.95 -0.1 1.097
2022 Yokohama DeNA - INT 3B 32 17 8 33 5 45 4 .911 183.2 2.01 -2.4 .894
2023 YDNA (Ni-Gun) - AA 1B 1 1 7 2 2 9 0 1.000 8.0 10.12 +0.1 1.027
2023 YDNA (Ni-Gun) - AA 2B 1 1 3 4 2 7 0 1.000 10.0 6.30 -0.1 1.031
2023 YDNA - INT 2B 9 0 5 5 2 11 1 .909 17.2 5.09 -1.1 .685
2023 YDNA (Ni-Gun) - AA 3B 36 34 18 56 5 81 7 .914 311.2 2.14 -4.1 .909
2023 YDNA - INT 3B 20 20 8 34 6 42 0 1.000 176.2 2.14 +0.5 1.015
2024 YDNA - INT 1B 7 4 39 0 2 39 0 1.000 49.0 7.16 -0.0 1.012
2024 YDNA - INT 2B 11 1 7 4 2 11 0 1.000 29.2 3.34 -0.1 1.024
2024 YDNA - INT 3B 6 0 2 1 0 3 0 1.000 11.1 2.38 +0.0 1.015
2024 YDNA - INT LF 3 2 1 1 0 2 0 1.000 16.2 1.08 -1.0 .485
2024 YDNA - INT RF 3 3 5 0 0 5 0 1.000 26.1 1.71 -0.9 .810
2025 YDNA - INT 1B 2 0 3 0 1 3 0 1.000 6.0 4.50 -0.3 .000
2025 YDNA - INT 2B 2 0 1 1 0 2 0 1.000 4.0 4.50 -0.0 .973
2025 YDNA - INT 3B 10 4 5 5 0 11 1 .909 51.2 1.74 -1.3 .729
2025 YDNA - INT LF 4 4 11 0 0 11 0 1.000 32.0 3.09 +0.2 .985
2025 YDNA - INT RF 3 3 5 0 0 5 0 1.000 25.0 1.80 -1.0 .815
TOTAL 1B 27 12 139 6 16 147 2 .986 135.2 9.62 -1.4 .942
TOTAL 2B 36 2 25 17 8 43 1 .977 74.2 5.06 -1.9 .803
TOTAL 3B 129 90 48 150 20 213 15 .930 884.0 2.02 -7.8 .926
TOTAL LF 7 6 12 1 0 13 0 1.000 48.2 2.40 -0.8 .908
TOTAL RF 6 6 10 0 0 10 0 1.000 51.1 1.75 -1.9 .813
PLAYER HISTORY
10/23/2014 Drafted by the Yokohama Bay Stars in the 5th round of the 2014 NPB Draft from Koku Gakuin University.
04/10/2021 Injured (mild oblique strain),day-to-day for 4 days.
05/30/2021 Injured (sore groin),day-to-day for 2 days.
11/30/2021 Received a 1-year contract through arbitration worth a total of Y200,000.
01/01/2022 OSA scouting updated ratings (potential): Contact: 45 (45); Power: 50 (50); Eye: 40 (40).
10/24/2022 Received a 1-year contract through arbitration worth a total of Y230,000.
01/01/2023 OSA scouting updated ratings (potential): Contact: 55 (55); Power: 50 (50); Eye: 40 (40).
07/29/2023 Injured (bruised finger),day-to-day for 1 day.
10/31/2023 Received a 1-year contract through arbitration worth a total of Y459,060.
01/01/2024 OSA scouting updated ratings (potential): Contact: 45 (45); Power: 50 (50); Eye: 40 (40).
10/27/2024 Received a 1-year contract through arbitration worth a total of Y600,000.
01/01/2025 OSA scouting updated ratings (potential): Contact: 45 (45); Power: 55 (55); Eye: 40 (40).
Wednesday, July 9th , 2025 - OOTP Baseball 25.11 Build 104