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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
|---|---|---|---|---|---|---|---|---|---|
| Otojiro Kakuta | 2025-2026 | .235 | 2 | 11 | 0 | 0 | 0 | 0.00 | 0 |
| Sugita Kakuta | 2019-2020 | .201 | 3 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Tsuneyo Kakutama | 2015-2027 | .000 | 0 | 0 | 12 | 16 | 47 | 2.87 | 244 |
| Moos Kalkema | 2027-2027 | .236 | 2 | 26 | 0 | 0 | 0 | 0.00 | 0 |
| Pedro Kalthoff | 2023-2027 | .000 | 0 | 0 | 10 | 8 | 3 | 6.79 | 187 |
| Tatsuzo Kamida | 2013-2018 | .253 | 23 | 93 | 0 | 0 | 0 | 0.00 | 0 |
| Dong Kan | 2024-2025 | .265 | 13 | 72 | 0 | 0 | 0 | 0.00 | 0 |
| Tian-yun Kan | 2027-2027 | .262 | 0 | 3 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshihisa Kanda | 2024-2027 | .307 | 21 | 163 | 0 | 0 | 0 | 0.00 | 0 |
| Anil Kandathil | 2023-2027 | .255 | 16 | 130 | 0 | 0 | 0 | 0.00 | 0 |
| Asokadatta Kandula | 2021-2026 | .000 | 0 | 0 | 16 | 12 | 10 | 4.06 | 298 |
| Hirotsugu Kaneko | 2014-2014 | .241 | 3 | 16 | 0 | 0 | 0 | 0.00 | 0 |
| Takahashi Kaneko | 2024-2024 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshida Kaneko | 2026-2027 | .000 | 0 | 0 | 2 | 4 | 1 | 4.33 | 55 |
| Chong-yeol Kang | 2025-2025 | .000 | 0 | 0 | 0 | 0 | 0 | 12.71 | 2 |
| Kazuhiko Kanno | 2013-2015 | .000 | 0 | 0 | 17 | 14 | 0 | 3.34 | 199 |
| Motoki Kanno | 2020-2027 | .258 | 68 | 305 | 0 | 0 | 0 | 0.00 | 0 |
| Yasunobu Kanno | 2015-2016 | .223 | 4 | 52 | 0 | 0 | 0 | 0.00 | 0 |
| Le-song Kao | 2023-2026 | .000 | 0 | 0 | 35 | 25 | 0 | 4.77 | 325 |
| Prakoso Kartini | 2024-2027 | .299 | 22 | 106 | 0 | 0 | 0 | 0.00 | 0 |
| Bowo Kartodirdjo | 2021-2027 | .000 | 0 | 0 | 19 | 11 | 6 | 4.58 | 394 |
| Argo Kartosuwiryo | 2024-2027 | .000 | 0 | 0 | 6 | 13 | 7 | 5.30 | 193 |
| Gesang Kartosuwiryo | 2021-2027 | .000 | 0 | 0 | 8 | 8 | 3 | 5.23 | 190 |
| Okitsugu Kataoka | 2023-2026 | .180 | 1 | 19 | 0 | 0 | 0 | 0.00 | 0 |
| Suezo Katayama | 2026-2027 | .000 | 0 | 0 | 3 | 6 | 3 | 4.41 | 131 |
| Mulia Kathirithamby | 2020-2022 | .000 | 0 | 0 | 5 | 16 | 43 | 4.38 | 92 |
| Ramelan Kathirithamby | 2026-2027 | .000 | 0 | 0 | 12 | 9 | 17 | 3.85 | 155 |
| Akira Kato | 2018-2020 | .253 | 7 | 78 | 0 | 0 | 0 | 0.00 | 0 |
| Izumo Kato | 2022-2022 | .118 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Jotaro Kato | 2027-2027 | .206 | 1 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Kaoru Kato | 2024-2027 | .000 | 0 | 0 | 15 | 15 | 0 | 4.94 | 261 |
| Maresuke Kato | 2016-2017 | .271 | 17 | 94 | 0 | 0 | 0 | 0.00 | 0 |
| Masutaro Kato | 2027-2027 | .202 | 4 | 25 | 0 | 0 | 0 | 0.00 | 0 |
| Tadasuke Kato | 2014-2016 | .000 | 0 | 0 | 24 | 20 | 1 | 4.71 | 385 |
| Tamasaburo Kato | 2026-2027 | .000 | 0 | 0 | 1 | 1 | 6 | 4.76 | 54 |
| Atmananda Katragadda | 2020-2023 | .000 | 0 | 0 | 3 | 7 | 13 | 5.02 | 136 |
| Chang-wei Kau | 2025-2025 | .000 | 0 | 0 | 3 | 2 | 2 | 2.48 | 29 |
| Kiyonaga Kawaguchi | 2027-2027 | .204 | 6 | 38 | 0 | 0 | 0 | 0.00 | 0 |
| Naruhiko Kawaguchi | 2026-2026 | .177 | 1 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Tsuneyo Kawai | 2018-2021 | .000 | 0 | 0 | 16 | 19 | 9 | 4.75 | 328 |
| Ieyoshi Kawakami | 2026-2026 | .385 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Hideki Kawano | 2027-2027 | .500 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Kiyoemon Kawano | 2026-2027 | .284 | 4 | 41 | 0 | 0 | 0 | 0.00 | 0 |
| Ton Kawano | 2024-2027 | .248 | 10 | 47 | 0 | 0 | 0 | 0.00 | 0 |
| Masatake Kawashima | 2027-2027 | .277 | 6 | 34 | 0 | 0 | 0 | 0.00 | 0 |
| Thomas Kearton | 2026-2027 | .000 | 0 | 0 | 1 | 2 | 0 | 5.93 | 12 |
| Samuel Keeble | 2024-2027 | .000 | 0 | 0 | 23 | 28 | 1 | 5.10 | 343 |
| Harrison Keightley | 2027-2027 | .000 | 0 | 0 | 2 | 1 | 1 | 9.00 | 6 |
| John Keith | 2017-2018 | .000 | 0 | 0 | 13 | 13 | 0 | 5.01 | 167 |
| Chris Keller | 2024-2025 | .287 | 2 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Justin Keller | 2013-2021 | .000 | 0 | 0 | 41 | 52 | 3 | 4.51 | 843 |
| Steve Keller | 2021-2026 | .000 | 0 | 0 | 2 | 7 | 7 | 5.48 | 32 |
| Joseph Kelley | 2022-2024 | .000 | 0 | 0 | 8 | 12 | 35 | 4.66 | 106 |
| John Kelly | 2018-2022 | .000 | 0 | 0 | 37 | 28 | 0 | 4.33 | 482 |
| John Kelly | 2014-2024 | .252 | 9 | 72 | 0 | 0 | 0 | 0.00 | 0 |
| Peter Kelly | 2022-2022 | .277 | 3 | 12 | 0 | 0 | 0 | 0.00 | 0 |
| Nate Kemp | 2027-2027 | .255 | 0 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Ed Kennedy | 2015-2020 | .275 | 28 | 288 | 0 | 0 | 0 | 0.00 | 0 |
| Joe Kennedy | 2025-2025 | .308 | 3 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Aidan Kenneil | 2023-2027 | .000 | 0 | 0 | 13 | 6 | 0 | 4.57 | 155 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| John Kennelly | 2026-2027 | .266 | 14 | 139 | 0 | 0 | 0 | 0.00 | 0 |
| Joe Kenner | 2018-2027 | .000 | 0 | 0 | 8 | 12 | 0 | 5.63 | 192 |
| Jeff Kent | 2022-2022 | .371 | 0 | 11 | 0 | 0 | 0 | 0.00 | 0 |
| Leroy Kent | 2026-2027 | .000 | 0 | 0 | 2 | 3 | 1 | 6.68 | 68 |
| Moritz Kenter | 2026-2027 | .000 | 0 | 0 | 2 | 0 | 1 | 3.82 | 47 |
| Adam Kerr | 2018-2026 | .272 | 12 | 66 | 0 | 0 | 0 | 0.00 | 0 |
| Davey Kerracher | 2012-2015 | .000 | 0 | 0 | 14 | 12 | 9 | 3.67 | 227 |
| Arana Kesiraju | 2021-2027 | .246 | 27 | 133 | 0 | 0 | 0 | 0.00 | 0 |
| Kalidas Keskar | 2020-2022 | .000 | 0 | 0 | 35 | 26 | 0 | 4.51 | 372 |
| Ed Kessler | 2019-2019 | .351 | 14 | 86 | 0 | 0 | 0 | 0.00 | 0 |
| Andrew Kesterton | 2024-2027 | .000 | 0 | 0 | 9 | 6 | 4 | 5.35 | 105 |
| Dominic Key | 2022-2027 | .000 | 0 | 0 | 9 | 24 | 0 | 7.41 | 217 |
| Nelson Keys | 2022-2022 | .224 | 1 | 18 | 0 | 0 | 0 | 0.00 | 0 |
| Jon Keyte | 2027-2027 | .000 | 0 | 0 | 7 | 16 | 0 | 6.53 | 109 |
| Ahilocana Keyush | 2023-2027 | .000 | 0 | 0 | 18 | 10 | 85 | 2.80 | 285 |
| Wahid Khaldoon | 2021-2026 | .000 | 0 | 0 | 16 | 19 | 63 | 4.54 | 171 |
| Shah Khalili | 2022-2026 | .316 | 15 | 155 | 0 | 0 | 0 | 0.00 | 0 |
| Baber Khan | 2026-2026 | .380 | 1 | 6 | 0 | 0 | 0 | 0.00 | 0 |
| Aanand Kharbanda | 2023-2027 | .000 | 0 | 0 | 1 | 1 | 2 | 3.27 | 133 |
| Abdul Razzaq Kharoti | 2022-2023 | .000 | 0 | 0 | 8 | 7 | 60 | 2.59 | 114 |
| Ijaz Kharoti | 2024-2027 | .000 | 0 | 0 | 19 | 8 | 0 | 3.46 | 232 |
| Waqar Kharoti | 2024-2025 | .259 | 30 | 161 | 0 | 0 | 0 | 0.00 | 0 |
| Bob Khoo | 2024-2027 | .195 | 3 | 25 | 0 | 0 | 0 | 0.00 | 0 |
| Rana Khosa | 2021-2027 | .269 | 28 | 234 | 0 | 0 | 0 | 0.00 | 0 |
| On Khu | 2024-2027 | .000 | 0 | 0 | 9 | 9 | 18 | 2.91 | 249 |
| Goro Kichida | 2023-2025 | .241 | 9 | 79 | 0 | 0 | 0 | 0.00 | 0 |
| Kantaro Kichida | 2026-2027 | .000 | 0 | 0 | 8 | 10 | 1 | 4.10 | 144 |
| Kazushige Kichida | 2025-2027 | .000 | 0 | 0 | 1 | 0 | 0 | 4.33 | 54 |
| Masakado Kichida | 2014-2016 | .306 | 16 | 105 | 0 | 0 | 0 | 0.00 | 0 |
| Nakamaro Kichida | 2024-2025 | .000 | 0 | 0 | 3 | 1 | 1 | 3.71 | 54 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Noriaki Kichida | 2015-2018 | .000 | 0 | 0 | 16 | 18 | 0 | 4.75 | 270 |
| Tomiji Kichida | 2020-2020 | .000 | 0 | 0 | 0 | 0 | 1 | 6.75 | 2 |
| Yeijiro Kichida | 2016-2021 | .000 | 0 | 0 | 12 | 4 | 3 | 3.34 | 205 |
| Yoriyuki Kichida | 2020-2027 | .000 | 0 | 0 | 20 | 36 | 13 | 5.81 | 390 |
| Matsusuke Kichikawa | 2019-2021 | .267 | 50 | 203 | 0 | 0 | 0 | 0.00 | 0 |
| Hoang Kieu | 2025-2026 | .264 | 21 | 151 | 0 | 0 | 0 | 0.00 | 0 |
| Hidemichi Kikuchi | 2017-2022 | .000 | 0 | 0 | 70 | 30 | 2 | 3.99 | 920 |
| Shino Kikuchi | 2027-2027 | .240 | 9 | 39 | 0 | 0 | 0 | 0.00 | 0 |
| Shusui Kikuchi | 2019-2025 | .302 | 9 | 45 | 0 | 0 | 0 | 0.00 | 0 |
| Suezo Kikuchi | 2018-2020 | .000 | 0 | 0 | 3 | 5 | 1 | 6.06 | 75 |
| Bong-hwan Kim | 2027-2027 | .217 | 1 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Chang-bum Kim | 2015-2021 | .000 | 0 | 0 | 6 | 6 | 18 | 3.72 | 151 |
| Chong-hyeon Kim | 2026-2027 | .000 | 0 | 0 | 3 | 3 | 12 | 4.70 | 58 |
| Dae-il Kim | 2026-2027 | .215 | 8 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Dong-kwan Kim | 2025-2027 | .000 | 0 | 0 | 18 | 14 | 9 | 3.45 | 232 |
| Hae-nim Kim | 2025-2027 | .292 | 12 | 111 | 0 | 0 | 0 | 0.00 | 0 |
| Hyung-jin Kim | 2022-2024 | .259 | 7 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Hyung-ki Kim | 2026-2027 | .209 | 4 | 45 | 0 | 0 | 0 | 0.00 | 0 |
| Il-hwan Kim | 2026-2027 | .281 | 15 | 55 | 0 | 0 | 0 | 0.00 | 0 |
| Ji-hyun Kim | 2024-2025 | .275 | 15 | 91 | 0 | 0 | 0 | 0.00 | 0 |
| Jin-hwan Kim | 2025-2027 | .000 | 0 | 0 | 7 | 8 | 0 | 5.03 | 102 |
| Jin-yu Kim | 2022-2027 | .000 | 0 | 0 | 17 | 11 | 11 | 5.06 | 269 |
| Jong-min Kim | 2026-2027 | .000 | 0 | 0 | 5 | 5 | 2 | 5.63 | 188 |
| Ki-hoon Kim | 2027-2027 | .242 | 0 | 17 | 0 | 0 | 0 | 0.00 | 0 |
| Kyung-bok Kim | 2021-2027 | .000 | 0 | 0 | 29 | 62 | 3 | 6.79 | 688 |
| Man-yoon Kim | 2024-2027 | .311 | 5 | 111 | 0 | 0 | 0 | 0.00 | 0 |
| Pyeong-chu Kim | 2025-2027 | .212 | 0 | 12 | 0 | 0 | 0 | 0.00 | 0 |
| Sang-hyun Kim | 2027-2027 | .000 | 0 | 0 | 7 | 12 | 0 | 5.31 | 159 |
| Sang-soo Kim | 2026-2027 | .273 | 21 | 99 | 0 | 0 | 0 | 0.00 | 0 |
| Seon-chin Kim | 2026-2027 | .167 | 1 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Seung-jun Kim | 2020-2024 | .232 | 9 | 109 | 0 | 0 | 0 | 0.00 | 0 |
| Sung-joon Kim | 2024-2027 | .285 | 25 | 101 | 0 | 0 | 0 | 0.00 | 0 |
| Tae-kyun Kim | 2026-2027 | .208 | 2 | 60 | 0 | 0 | 0 | 0.00 | 0 |
| Tal-hun Kim | 2026-2027 | .130 | 0 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Yeong-il Kim | 2026-2027 | .327 | 36 | 150 | 0 | 0 | 0 | 0.00 | 0 |
| Yeong-sin Kim | 2025-2025 | .250 | 1 | 6 | 0 | 0 | 0 | 0.00 | 0 |
| Yeong-suk Kim | 2020-2022 | .000 | 0 | 0 | 13 | 13 | 0 | 4.96 | 193 |
| Yong-sup Kim | 2027-2027 | .243 | 1 | 44 | 0 | 0 | 0 | 0.00 | 0 |
| Jeff Kimball | 2018-2019 | .000 | 0 | 0 | 2 | 7 | 0 | 6.34 | 81 |
| Wayne Kimotho | 2027-2027 | .000 | 0 | 0 | 0 | 0 | 0 | 4.50 | 7 |
| Jun'ichi Kimura | 2019-2021 | .000 | 0 | 0 | 10 | 5 | 11 | 3.90 | 163 |
| Tokimasa Kimura | 2017-2019 | .281 | 30 | 190 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshihisa Kimura | 2017-2021 | .314 | 6 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Phil Kinch | 2027-2027 | .161 | 0 | 4 | 0 | 0 | 0 | 0.00 | 0 |
| Henry King | 2017-2022 | .331 | 36 | 147 | 0 | 0 | 0 | 0.00 | 0 |
| Jim King | 2015-2024 | .000 | 0 | 0 | 8 | 5 | 4 | 3.67 | 112 |
| Jonathan King | 2025-2027 | .227 | 7 | 26 | 0 | 0 | 0 | 0.00 | 0 |
| Leon King | 2014-2014 | .000 | 0 | 0 | 3 | 5 | 1 | 7.91 | 40 |
| Mac King | 2023-2024 | .286 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Nino Kinkladze | 2022-2023 | .000 | 0 | 0 | 4 | 10 | 0 | 6.25 | 122 |
| Charlie Kirby | 2018-2021 | .238 | 19 | 114 | 0 | 0 | 0 | 0.00 | 0 |
| Ryan Kirby | 2015-2017 | .243 | 14 | 57 | 0 | 0 | 0 | 0.00 | 0 |
| Ken Kirk | 2017-2021 | .273 | 13 | 141 | 0 | 0 | 0 | 0.00 | 0 |
| Victor Kirkland | 2014-2017 | .000 | 0 | 0 | 16 | 23 | 6 | 4.45 | 350 |
| Israhel Kirschofer | 2026-2027 | .265 | 4 | 44 | 0 | 0 | 0 | 0.00 | 0 |
| Rhys Kirton | 2026-2027 | .208 | 15 | 76 | 0 | 0 | 0 | 0.00 | 0 |
| Subaru Kishita | 2017-2018 | .000 | 0 | 0 | 4 | 5 | 0 | 5.87 | 65 |
| Tomiichi Kishita | 2014-2014 | .320 | 5 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Akihiro Kitamura | 2024-2027 | .316 | 2 | 6 | 0 | 0 | 0 | 0.00 | 0 |
| Noboru Kitamura | 2022-2027 | .000 | 0 | 0 | 24 | 27 | 1 | 4.43 | 522 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Soshu Kitamura | 2014-2020 | .340 | 1 | 53 | 0 | 0 | 0 | 0.00 | 0 |
| Hideyori Kiyomizu | 2013-2013 | .369 | 3 | 22 | 0 | 0 | 0 | 0.00 | 0 |
| Ienobu Kiyomizu | 2017-2021 | .000 | 0 | 0 | 6 | 10 | 6 | 6.30 | 189 |
| Mito Kiyomizu | 2020-2020 | .000 | 0 | 0 | 0 | 2 | 1 | 8.85 | 43 |
| Noritoshi Kiyomizu | 2021-2023 | .250 | 4 | 28 | 0 | 0 | 0 | 0.00 | 0 |
| Ryoichi Kiyomizu | 2019-2026 | .251 | 25 | 273 | 0 | 0 | 0 | 0.00 | 0 |
| Seitaro Kiyomizu | 0-0 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Yasukazu Kiyomizu | 2017-2021 | .261 | 18 | 122 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshino Kiyomizu | 2026-2027 | .262 | 0 | 21 | 0 | 0 | 0 | 0.00 | 0 |
| Julius Klee | 2024-2024 | .000 | 0 | 0 | 0 | 1 | 1 | 7.77 | 17 |
| Bruce Klein | 2026-2027 | .000 | 0 | 0 | 3 | 1 | 4 | 3.00 | 49 |
| Will Kline | 2026-2027 | .254 | 12 | 72 | 0 | 0 | 0 | 0.00 | 0 |
| Edolf Klooster | 2024-2026 | .205 | 9 | 49 | 0 | 0 | 0 | 0.00 | 0 |
| Michael Knaus | 2018-2021 | .271 | 13 | 66 | 0 | 0 | 0 | 0.00 | 0 |
| Kurt Knight | 2026-2027 | .193 | 1 | 14 | 0 | 0 | 0 | 0.00 | 0 |
| Noah Knightley | 2025-2025 | .291 | 4 | 23 | 0 | 0 | 0 | 0.00 | 0 |
| Donny Knoops | 2023-2026 | .200 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Philip Knoops | 2024-2025 | .217 | 1 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Dave Knutsen | 2018-2020 | .192 | 2 | 12 | 0 | 0 | 0 | 0.00 | 0 |
| Hyeon-cheong Ko | 2025-2027 | .295 | 5 | 117 | 0 | 0 | 0 | 0.00 | 0 |
| Jung-tae Ko | 2024-2026 | .286 | 12 | 85 | 0 | 0 | 0 | 0.00 | 0 |
| Seung-kab Ko | 2018-2021 | .000 | 0 | 0 | 16 | 7 | 6 | 4.96 | 260 |
| Junji Kobayashi | 0-0 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Kakuzo Kobayashi | 2024-2025 | .000 | 0 | 0 | 2 | 2 | 2 | 3.90 | 34 |
| Kichibei Kobayashi | 2024-2027 | .000 | 0 | 0 | 5 | 1 | 3 | 4.89 | 46 |
| Kohei Kobayashi | 2026-2027 | .268 | 3 | 13 | 0 | 0 | 0 | 0.00 | 0 |
| Mitsunari Kobayashi | 2024-2025 | .000 | 0 | 0 | 7 | 16 | 1 | 7.38 | 79 |
| Mitsuo Kobayashi | 2027-2027 | .000 | 0 | 0 | 15 | 5 | 0 | 3.74 | 196 |
| Mitsuzuka Kobayashi | 2017-2020 | .277 | 32 | 143 | 0 | 0 | 0 | 0.00 | 0 |
| Naomi Kobayashi | 2026-2027 | .000 | 0 | 0 | 11 | 15 | 0 | 6.45 | 169 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Nobuhiko Kobayashi | 2017-2018 | .000 | 0 | 0 | 0 | 2 | 0 | 6.59 | 18 |
| Osamu Kobayashi | 2024-2027 | .000 | 0 | 0 | 26 | 20 | 6 | 5.60 | 333 |
| Takanibu Kobayashi | 2013-2014 | .252 | 3 | 60 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshino Kobayashi | 2017-2017 | .288 | 1 | 28 | 0 | 0 | 0 | 0.00 | 0 |
| Bas Koch | 2026-2026 | .000 | 0 | 0 | 0 | 0 | 0 | 2.57 | 7 |
| Dave Koch | 2017-2022 | .000 | 0 | 0 | 43 | 49 | 1 | 5.47 | 572 |
| Toshiki Koda | 2014-2027 | .000 | 0 | 0 | 7 | 9 | 0 | 3.86 | 168 |
| Yasujiro Koda | 2018-2018 | .000 | 0 | 0 | 1 | 0 | 0 | 2.89 | 17 |
| Hidehira Kodo | 2024-2026 | .000 | 0 | 0 | 0 | 3 | 5 | 9.00 | 6 |
| Kenkichi Kodo | 2023-2025 | .000 | 0 | 0 | 0 | 1 | 7 | 2.50 | 35 |
| Yoshitake Kodo | 2027-2027 | .000 | 0 | 0 | 2 | 3 | 0 | 9.77 | 31 |
| Juichi Kogawa | 2025-2027 | .241 | 10 | 50 | 0 | 0 | 0 | 0.00 | 0 |
| Mashashi Kogawa | 2014-2014 | .267 | 9 | 40 | 0 | 0 | 0 | 0.00 | 0 |
| Rintaro Kogawa | 2027-2027 | .222 | 0 | 3 | 0 | 0 | 0 | 0.00 | 0 |
| Tetsui Kogawa | 2020-2022 | .000 | 0 | 0 | 6 | 5 | 5 | 7.37 | 90 |
| Tokutomi Kogawa | 2018-2021 | .287 | 32 | 207 | 0 | 0 | 0 | 0.00 | 0 |
| Tomiji Kohara | 2026-2027 | .237 | 11 | 52 | 0 | 0 | 0 | 0.00 | 0 |
| Sadao Koizumi | 2017-2023 | .283 | 26 | 216 | 0 | 0 | 0 | 0.00 | 0 |
| Tokaji Koizumi | 2016-2020 | .263 | 18 | 93 | 0 | 0 | 0 | 0.00 | 0 |
| Hidemichi Kojima | 2026-2027 | .226 | 11 | 66 | 0 | 0 | 0 | 0.00 | 0 |
| Kazuhiro Kojima | 2015-2023 | .292 | 19 | 130 | 0 | 0 | 0 | 0.00 | 0 |
| Kojuro Kojima | 2024-2024 | .000 | 0 | 0 | 4 | 3 | 0 | 4.38 | 44 |
| Namboku Kojima | 2023-2025 | .000 | 0 | 0 | 10 | 10 | 0 | 4.16 | 111 |
| Matsuyo Kokawa | 2015-2020 | .000 | 0 | 0 | 14 | 4 | 8 | 3.74 | 186 |
| Misao Kokawa | 2016-2025 | .229 | 26 | 137 | 0 | 0 | 0 | 0.00 | 0 |
| Takamasa Kokawa | 2026-2026 | .255 | 13 | 58 | 0 | 0 | 0 | 0.00 | 0 |
| Yuki Kokawa | 2027-2027 | .000 | 0 | 0 | 3 | 5 | 1 | 4.10 | 36 |
| Mikhail Koklyaev | 2020-2024 | .255 | 41 | 182 | 0 | 0 | 0 | 0.00 | 0 |
| Kimi Kokura | 2025-2027 | .241 | 17 | 81 | 0 | 0 | 0 | 0.00 | 0 |
| Hidekazu Komatsu | 2027-2027 | .000 | 0 | 0 | 4 | 5 | 21 | 3.86 | 59 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Shirai Komatsu | 2024-2024 | .310 | 1 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Katsunan Kondo | 2026-2027 | .000 | 0 | 0 | 2 | 1 | 4 | 3.66 | 45 |
| Masuhiro Kondo | 2014-2015 | .000 | 0 | 0 | 14 | 12 | 0 | 3.74 | 199 |
| Norinaga Kondo | 2015-2015 | .281 | 17 | 87 | 0 | 0 | 0 | 0.00 | 0 |
| Sumitomo Kondo | 2027-2027 | .000 | 0 | 0 | 4 | 7 | 14 | 4.58 | 95 |
| Tsugiharu Kondo | 2024-2024 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Borah Konduru | 2024-2026 | .220 | 8 | 48 | 0 | 0 | 0 | 0.00 | 0 |
| Mokichi Kono | 2016-2016 | .263 | 7 | 45 | 0 | 0 | 0 | 0.00 | 0 |
| Shunso Kono | 2017-2021 | .252 | 13 | 108 | 0 | 0 | 0 | 0.00 | 0 |
| Yoshimasa Kono | 2026-2026 | .156 | 1 | 3 | 0 | 0 | 0 | 0.00 | 0 |
| Richard Koonts | 2014-2015 | .000 | 0 | 0 | 7 | 9 | 14 | 3.99 | 72 |
| Vahe Kordonskaya | 2022-2027 | .247 | 6 | 23 | 0 | 0 | 0 | 0.00 | 0 |
| Gerard Kotas | 2025-2026 | .000 | 0 | 0 | 14 | 17 | 1 | 4.17 | 202 |
| Monzaemon Kouda | 2026-2026 | .294 | 4 | 41 | 0 | 0 | 0 | 0.00 | 0 |
| Moromao Kouda | 2016-2020 | .281 | 24 | 139 | 0 | 0 | 0 | 0.00 | 0 |
| Seishiro Kouda | 2021-2021 | .000 | 0 | 0 | 0 | 0 | 0 | 7.36 | 1 |
| Takafumi Kouda | 2017-2021 | .201 | 4 | 42 | 0 | 0 | 0 | 0.00 | 0 |
| Kazu Koumura | 2021-2024 | .267 | 7 | 170 | 0 | 0 | 0 | 0.00 | 0 |
| Joji Kouno | 2024-2024 | .000 | 0 | 0 | 1 | 0 | 0 | 9.00 | 5 |
| Kazuhiro Kouno | 2018-2027 | .000 | 0 | 0 | 13 | 18 | 0 | 4.73 | 296 |
| Ryu Kouno | 2013-2021 | .000 | 0 | 0 | 15 | 12 | 17 | 4.25 | 237 |
| Zale Kountouroudas | 2015-2020 | .255 | 3 | 16 | 0 | 0 | 0 | 0.00 | 0 |
| Drew Kowalchuk | 2018-2025 | .297 | 96 | 523 | 0 | 0 | 0 | 0.00 | 0 |
| Tasuku Kozawa | 2015-2021 | .000 | 0 | 0 | 35 | 21 | 28 | 3.71 | 444 |
| Clement Kramer | 2015-2016 | .000 | 0 | 0 | 8 | 11 | 0 | 4.20 | 119 |
| William Kramer | 2025-2026 | .000 | 0 | 0 | 15 | 11 | 0 | 4.23 | 189 |
| Jeff Krause | 2026-2027 | .178 | 3 | 39 | 0 | 0 | 0 | 0.00 | 0 |
| Michael Krause | 2025-2027 | .288 | 20 | 160 | 0 | 0 | 0 | 0.00 | 0 |
| Fred Krieger | 2024-2027 | .000 | 0 | 0 | 2 | 11 | 0 | 6.97 | 59 |
| Bing-de Ku | 2024-2025 | .000 | 0 | 0 | 7 | 8 | 24 | 4.23 | 97 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Insung Ku | 2026-2027 | .000 | 0 | 0 | 1 | 5 | 0 | 9.31 | 23 |
| Myung-joo Ku | 2026-2027 | .255 | 13 | 118 | 0 | 0 | 0 | 0.00 | 0 |
| Yee Kuang | 2020-2026 | .000 | 0 | 0 | 26 | 24 | 63 | 3.94 | 319 |
| Motonobu Kubo | 2022-2024 | .328 | 15 | 76 | 0 | 0 | 0 | 0.00 | 0 |
| Norio Kubo | 2022-2025 | .263 | 10 | 99 | 0 | 0 | 0 | 0.00 | 0 |
| Shirai Kubo | 2018-2018 | .286 | 1 | 10 | 0 | 0 | 0 | 0.00 | 0 |
| Ikki Kubota | 2019-2022 | .293 | 17 | 153 | 0 | 0 | 0 | 0.00 | 0 |
| Satoshi Kubota | 2017-2018 | .276 | 10 | 87 | 0 | 0 | 0 | 0.00 | 0 |
| Tofeeq Kuchis | 2021-2025 | .305 | 41 | 248 | 0 | 0 | 0 | 0.00 | 0 |
| Mitsukuni Kudo | 2027-2027 | .000 | 0 | 0 | 4 | 2 | 0 | 3.09 | 36 |
| Oda Kudo | 2017-2017 | .000 | 0 | 0 | 1 | 4 | 0 | 5.95 | 78 |
| Takeji Kudo | 2027-2027 | .254 | 2 | 24 | 0 | 0 | 0 | 0.00 | 0 |
| Satoshi Kuhabara | 2018-2027 | .274 | 28 | 120 | 0 | 0 | 0 | 0.00 | 0 |
| Jaikirti Kumawagra | 2024-2025 | .227 | 11 | 80 | 0 | 0 | 0 | 0.00 | 0 |
| Anenas Kunwarjit | 2020-2022 | .000 | 0 | 0 | 13 | 9 | 0 | 5.98 | 199 |
| Amad Kuram | 2021-2022 | .258 | 10 | 63 | 0 | 0 | 0 | 0.00 | 0 |
| Shunji Kurota | 2025-2027 | .000 | 0 | 0 | 8 | 9 | 8 | 4.77 | 150 |
| Gusti Kusuma | 2022-2026 | .000 | 0 | 0 | 26 | 15 | 69 | 3.12 | 455 |
| Chong-su Kwon | 2025-2026 | .000 | 0 | 0 | 4 | 1 | 6 | 3.69 | 26 |
| Chun-yeong Kwon | 2024-2024 | .302 | 5 | 26 | 0 | 0 | 0 | 0.00 | 0 |
| Hye-yeon Kwon | 2023-2026 | .236 | 60 | 210 | 0 | 0 | 0 | 0.00 | 0 |
| Euthymius Kyalian | 2018-2020 | .297 | 42 | 172 | 0 | 0 | 0 | 0.00 | 0 |
