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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 |
| Kevin Kafka | 2008-2014 | 3 | 2 | .600 | 11.35 | 20 | 2 | 0 | 0 | 2 | 23.0 | 41 | 29 | 8 | 7 | 8 | 1.4 |
| Paul Kahle | 2022-2029 | 64 | 26 | .711 | 3.43 | 557 | 1 | 0 | 0 | 49 | 695.7 | 626 | 265 | 19 | 252 | 407 | 63.6 |
| Steffen Kangas | 2020-2022 | 4 | 10 | .286 | 4.64 | 102 | 0 | 0 | 0 | 1 | 106.7 | 114 | 55 | 8 | 52 | 28 | 4.1 |
| Christopher Kearns | 2000-2010 | 110 | 152 | .420 | 3.74 | 369 | 351 | 45 | 10 | 0 | 2471.0 | 2459 | 1026 | 127 | 884 | 1414 | 124.5 |
| Herbert Keen | 2017-2024 | 8 | 3 | .727 | 3.90 | 88 | 0 | 0 | 0 | 2 | 99.3 | 103 | 43 | 11 | 43 | 54 | 6.7 |
| David Kelley | 2019-2029 | 56 | 62 | .475 | 4.24 | 522 | 126 | 7 | 2 | 11 | 1396.6 | 1375 | 658 | 119 | 513 | 686 | 55.4 |
| Harvey Kellner | 2026-2029 | 21 | 32 | .396 | 4.47 | 80 | 76 | 4 | 0 | 0 | 477.7 | 538 | 237 | 56 | 164 | 181 | 16.4 |
| Mohammad Kemmer | 2003-2015 | 70 | 46 | .603 | 3.42 | 948 | 1 | 0 | 0 | 43 | 938.0 | 900 | 356 | 94 | 207 | 550 | 72.0 |
| Mario Kendrick | 2000-2003 | 28 | 45 | .384 | 4.23 | 114 | 96 | 5 | 1 | 1 | 673.0 | 619 | 316 | 70 | 213 | 549 | 23.4 |
| Randy Kennedy | 2000-2010 | 139 | 124 | .529 | 3.84 | 353 | 353 | 85 | 13 | 0 | 2598.6 | 2463 | 1109 | 306 | 586 | 1727 | 117.5 |
| Jason Kenny | 2028-2029 | 1 | 8 | .111 | 8.09 | 12 | 12 | 2 | 0 | 0 | 62.3 | 88 | 56 | 11 | 27 | 14 | 0.0 |
| Elbert Kenyon | 2023-2029 | 48 | 69 | .410 | 4.72 | 229 | 141 | 4 | 3 | 13 | 954.7 | 974 | 501 | 117 | 340 | 463 | 28.7 |
| Kenneth Keown | 2001-2010 | 7 | 31 | .184 | 5.90 | 84 | 44 | 4 | 0 | 0 | 302.0 | 332 | 198 | 41 | 154 | 66 | 0.6 |
| Tom Kerry | 2011-2015 | 4 | 3 | .571 | 3.89 | 62 | 0 | 0 | 0 | 0 | 76.3 | 63 | 33 | 6 | 31 | 32 | 3.8 |
| Joe Kersey | 2027-2029 | 50 | 24 | .676 | 3.08 | 108 | 108 | 2 | 2 | 0 | 701.3 | 632 | 240 | 35 | 110 | 444 | 51.1 |
| Jim Ketcham | 2022-2029 | 20 | 47 | .299 | 4.76 | 105 | 92 | 2 | 1 | 1 | 544.0 | 594 | 288 | 83 | 206 | 269 | 17.8 |
| Ryan Keyes | 2027-2027 | 0 | 1 | .000 | 9.00 | 1 | 0 | 0 | 0 | 0 | 1.0 | 1 | 1 | 0 | 1 | 0 | 0.0 |
| Dave King | 2027-2029 | 22 | 38 | .367 | 4.29 | 99 | 99 | 1 | 0 | 0 | 596.3 | 608 | 284 | 63 | 224 | 193 | 27.1 |
| Rudolf King | 2020-2029 | 13 | 42 | .236 | 4.71 | 567 | 7 | 0 | 0 | 34 | 688.3 | 700 | 360 | 70 | 261 | 292 | 37.9 |
| Edward Kinzel | 2015-2021 | 6 | 0 | 1.000 | 4.43 | 69 | 0 | 0 | 0 | 1 | 87.3 | 81 | 43 | 13 | 49 | 38 | 4.3 |
| Tony Kirkland | 2015-2027 | 96 | 133 | .419 | 3.69 | 352 | 341 | 12 | 7 | 0 | 2110.3 | 2210 | 866 | 188 | 616 | 733 | 107.8 |
| Scott Kirklin | 2027-2029 | 16 | 14 | .533 | 3.79 | 226 | 0 | 0 | 0 | 7 | 232.7 | 225 | 98 | 27 | 61 | 91 | 19.3 |
| Harry Kirton | 2022-2029 | 107 | 77 | .582 | 3.54 | 273 | 272 | 6 | 4 | 0 | 1684.3 | 1578 | 662 | 48 | 444 | 779 | 92.4 |
| Stephen Kittrell | 2027-2028 | 3 | 5 | .375 | 3.59 | 14 | 13 | 1 | 0 | 0 | 72.7 | 71 | 29 | 12 | 19 | 37 | 3.8 |
| Sanesato Kiyomori | 2016-2029 | 56 | 61 | .479 | 3.85 | 992 | 0 | 0 | 0 | 98 | 1028.3 | 951 | 440 | 49 | 519 | 702 | 85.1 |
| James Klein | 2000-2001 | 14 | 17 | .452 | 4.35 | 49 | 44 | 2 | 0 | 0 | 283.7 | 301 | 137 | 35 | 96 | 245 | 10.5 |
| Abraham Klug | 2000-2004 | 7 | 10 | .412 | 5.40 | 40 | 18 | 0 | 0 | 2 | 123.3 | 128 | 74 | 26 | 31 | 88 | 2.8 |
| Hercules Knights | 2027-2029 | 21 | 30 | .412 | 5.00 | 72 | 71 | 1 | 1 | 0 | 378.0 | 352 | 210 | 51 | 207 | 226 | 8.5 |
| John Knighton | 2000-2006 | 30 | 16 | .652 | 3.90 | 281 | 0 | 0 | 0 | 3 | 329.6 | 330 | 143 | 31 | 100 | 187 | 20.1 |
| Shawn Knowles | 2012-2022 | 28 | 20 | .583 | 3.01 | 443 | 0 | 0 | 0 | 9 | 601.0 | 568 | 201 | 61 | 96 | 273 | 49.0 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO | PWS |
| Paul Knutson | 2005-2018 | 143 | 143 | .500 | 3.71 | 420 | 356 | 38 | 10 | 3 | 2506.3 | 2248 | 1034 | 289 | 746 | 1669 | 99.7 |
| Jeremiah Koepp | 2003-2010 | 6 | 8 | .429 | 3.96 | 125 | 0 | 0 | 0 | 2 | 166.0 | 169 | 73 | 15 | 75 | 61 | 7.7 |
| Cougar Koon | 2020-2029 | 49 | 50 | .495 | 2.91 | 511 | 104 | 0 | 0 | 107 | 1093.6 | 839 | 354 | 57 | 388 | 908 | 122.1 |
| Taro Koreku | 2000-2004 | 46 | 50 | .479 | 3.68 | 132 | 129 | 24 | 9 | 0 | 898.6 | 778 | 367 | 103 | 250 | 603 | 40.2 |
| James Kowalczyk | 2018-2026 | 2 | 3 | .400 | 4.54 | 66 | 0 | 0 | 0 | 1 | 105.0 | 109 | 53 | 15 | 49 | 54 | 3.6 |
| Raymond Kozak | 2021-2029 | 18 | 27 | .400 | 4.27 | 426 | 3 | 0 | 0 | 12 | 497.6 | 523 | 236 | 44 | 208 | 169 | 23.5 |
| Kevin Kozue | 2000-2012 | 0 | 0 | .000 | 9.00 | 1 | 0 | 0 | 0 | 1 | 1.0 | 1 | 1 | 1 | 0 | 0 | 0.0 |
| Kenneth Krahn | 2005-2013 | 91 | 81 | .529 | 2.71 | 258 | 258 | 11 | 6 | 0 | 1711.6 | 1578 | 515 | 62 | 283 | 841 | 135.6 |
| Donald Krajewski | 2004-2017 | 43 | 43 | .500 | 3.39 | 602 | 0 | 0 | 0 | 19 | 789.0 | 761 | 297 | 55 | 142 | 334 | 48.8 |
| Johnny Kramer | 2026-2029 | 20 | 22 | .476 | 4.72 | 57 | 57 | 1 | 0 | 0 | 364.3 | 371 | 191 | 52 | 145 | 178 | 13.2 |
| Michael Kramer | 2024-2029 | 1 | 0 | 1.000 | 5.70 | 30 | 0 | 0 | 0 | 1 | 36.3 | 41 | 23 | 6 | 26 | 13 | 0.8 |
| Michael Krieger | 2000-2002 | 12 | 9 | .571 | 4.39 | 160 | 6 | 0 | 0 | 4 | 219.3 | 229 | 107 | 30 | 77 | 176 | 11.6 |
| Steven Krusnak | 2016-2019 | 14 | 9 | .609 | 4.06 | 209 | 0 | 0 | 0 | 2 | 246.0 | 237 | 111 | 26 | 92 | 134 | 13.0 |
| Chikafusa Kyuso | 2000-2001 | 6 | 8 | .429 | 6.12 | 18 | 14 | 1 | 0 | 0 | 82.3 | 108 | 56 | 18 | 22 | 52 | 0.8 |
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