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| "K" Pitching Register | |
| Batting Register | Pitching Glossary |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO | PWS |
| Inazo Kan | 2013-2020 | 18 | 14 | .563 | 5.42 | 271 | 0 | 0 | 0 | 8 | 322.0 | 364 | 194 | 42 | 175 | 221 | 7.4 |
| Josh Karp | 2004-2007 | 8 | 10 | .444 | 3.73 | 24 | 24 | 0 | 0 | 0 | 147.3 | 132 | 61 | 10 | 51 | 104 | 8.1 |
| Justin Kaye | 2003-2012 | 11 | 10 | .524 | 5.92 | 155 | 0 | 0 | 0 | 4 | 162.7 | 168 | 107 | 21 | 95 | 91 | 5.6 |
| Daniel Kayser | 2009-2019 | 41 | 36 | .532 | 3.65 | 532 | 5 | 0 | 0 | 122 | 545.0 | 593 | 221 | 20 | 160 | 278 | 64.7 |
| Scott Kazmir | 2010-2015 | 0 | 6 | .000 | 6.54 | 50 | 1 | 0 | 0 | 4 | 85.3 | 121 | 62 | 14 | 35 | 50 | 1.7 |
| Aaron Kellett | 2016-2016 | 0 | 1 | .000 | 18.00 | 1 | 0 | 0 | 0 | 0 | 1.0 | 3 | 2 | 0 | 2 | 0 | 0.0 |
| Beau Kemp | 2005-2021 | 194 | 138 | .584 | 3.25 | 454 | 453 | 51 | 29 | 0 | 3134.3 | 2769 | 1133 | 226 | 653 | 2689 | 255.2 |
| Joe Kennedy | 2002-2012 | 72 | 75 | .490 | 4.57 | 218 | 190 | 5 | 0 | 1 | 1219.7 | 1292 | 619 | 133 | 365 | 744 | 64.3 |
| Steve Kent | 2010-2010 | 0 | 1 | .000 | 5.06 | 19 | 0 | 0 | 0 | 1 | 26.7 | 31 | 15 | 4 | 10 | 15 | 1.1 |
| Patrick Kesler | 2015-2019 | 7 | 5 | .583 | 4.28 | 143 | 0 | 0 | 0 | 9 | 176.6 | 183 | 84 | 26 | 99 | 104 | 9.5 |
| Ryan Ketchner | 2007-2019 | 132 | 124 | .516 | 3.65 | 460 | 338 | 19 | 8 | 9 | 2357.3 | 2192 | 956 | 147 | 731 | 1653 | 149.2 |
| Byung-Hyun Kim | 2000-2014 | 34 | 43 | .442 | 4.46 | 304 | 61 | 1 | 0 | 10 | 644.3 | 610 | 319 | 67 | 350 | 569 | 41.1 |
| Sun-Woo Kim | 2002-2008 | 2 | 0 | 1.000 | 2.87 | 60 | 0 | 0 | 0 | 2 | 69.0 | 56 | 22 | 5 | 30 | 46 | 7.3 |
| Harry King | 2018-2021 | 12 | 12 | .500 | 3.61 | 206 | 1 | 0 | 0 | 20 | 187.0 | 165 | 75 | 19 | 72 | 165 | 18.0 |
| O.J. King | 2007-2017 | 147 | 90 | .620 | 3.55 | 339 | 331 | 13 | 4 | 0 | 2092.0 | 1959 | 826 | 215 | 465 | 1542 | 148.9 |
| Ray King | 2000-2011 | 17 | 15 | .531 | 3.65 | 250 | 0 | 0 | 0 | 62 | 315.3 | 301 | 128 | 16 | 100 | 222 | 39.9 |
| Shaun King | 2013-2021 | 26 | 30 | .464 | 4.30 | 461 | 0 | 0 | 0 | 47 | 516.6 | 572 | 247 | 66 | 142 | 348 | 34.0 |
| Randy Kinnison | 2021-2021 | 0 | 1 | .000 | 2.46 | 5 | 1 | 0 | 0 | 0 | 7.3 | 9 | 2 | 0 | 4 | 4 | 0.0 |
| Dirk Kirk | 2013-2021 | 53 | 65 | .449 | 4.46 | 219 | 165 | 9 | 3 | 0 | 1080.3 | 1171 | 535 | 98 | 313 | 612 | 48.1 |
| William Kirkham | 2014-2016 | 20 | 16 | .556 | 4.00 | 103 | 41 | 6 | 2 | 3 | 373.3 | 392 | 166 | 37 | 112 | 218 | 20.4 |
| Tyler Kirkman | 2015-2016 | 0 | 2 | .000 | 4.31 | 16 | 0 | 0 | 0 | 0 | 31.3 | 34 | 15 | 4 | 7 | 27 | 1.4 |
| Steve Kline | 1998-2009 | 10 | 6 | .625 | 2.91 | 164 | 1 | 0 | 0 | 7 | 185.7 | 163 | 60 | 7 | 75 | 125 | 19.7 |
| Thomas Knapp | 2018-2021 | 45 | 38 | .542 | 3.99 | 121 | 107 | 14 | 4 | 0 | 739.3 | 698 | 328 | 84 | 210 | 581 | 37.9 |
| Brandon Knight | 2002-2009 | 1 | 1 | .500 | 6.53 | 19 | 0 | 0 | 0 | 1 | 20.7 | 26 | 15 | 5 | 9 | 11 | 0.0 |
| Gary Knotts | 2002-2010 | 8 | 10 | .444 | 4.93 | 170 | 1 | 0 | 0 | 6 | 290.0 | 340 | 159 | 33 | 111 | 168 | 11.8 |
| Billy Koch | 2000-2011 | 18 | 12 | .600 | 4.97 | 251 | 1 | 0 | 0 | 9 | 322.3 | 325 | 178 | 30 | 147 | 274 | 19.9 |
| Danny Kolb | 2000-2007 | 0 | 1 | .000 | 4.50 | 26 | 0 | 0 | 0 | 0 | 34.0 | 39 | 17 | 2 | 21 | 21 | 1.1 |
| Mike Koplove | 2002-2013 | 24 | 33 | .421 | 5.23 | 517 | 2 | 0 | 0 | 22 | 553.6 | 605 | 322 | 90 | 261 | 300 | 25.6 |
| John Koronka | 2006-2016 | 111 | 121 | .478 | 3.88 | 302 | 299 | 44 | 8 | 0 | 1990.3 | 2011 | 857 | 219 | 512 | 1309 | 116.1 |
| Hokusai Koryusai | 2017-2021 | 24 | 33 | .421 | 4.42 | 104 | 71 | 4 | 2 | 0 | 491.0 | 568 | 241 | 41 | 93 | 179 | 21.6 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO | PWS |
| Jean Koski | 2017-2021 | 11 | 17 | .393 | 4.20 | 255 | 0 | 0 | 0 | 22 | 242.3 | 250 | 113 | 31 | 95 | 238 | 16.9 |
| Troy Kowalewski | 2015-2021 | 24 | 22 | .522 | 3.92 | 370 | 0 | 0 | 0 | 6 | 487.0 | 457 | 212 | 61 | 135 | 417 | 32.1 |
| Hong-Chi Kuo | 2006-2017 | 33 | 32 | .508 | 4.15 | 347 | 39 | 1 | 0 | 7 | 628.3 | 607 | 290 | 65 | 241 | 469 | 32.3 |
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