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| "Z" Pitching Register | |
| Batting Register | Pitching Glossary |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
| Arnold Zachary | 2025-2025 | 12 | 9 | .571 | 5.15 | 26 | 26 | 1 | 0 | 0 | 155.7 | 167 | 89 | 26 | 45 | 53 |
| Rusty Zajicek | 2001-2007 | 41 | 57 | .418 | 5.24 | 122 | 121 | 26 | 2 | 0 | 861.3 | 882 | 501 | 124 | 416 | 494 |
| Alan Zalewski | 2008-2015 | 6 | 10 | .375 | 6.16 | 139 | 0 | 0 | 0 | 4 | 257.0 | 333 | 176 | 58 | 66 | 176 |
| Dan Zalewski | 2001-2013 | 103 | 132 | .438 | 5.14 | 364 | 326 | 8 | 3 | 3 | 1963.3 | 2201 | 1121 | 264 | 839 | 1719 |
| Stephen Zeitz | 2009-2019 | 118 | 140 | .457 | 4.79 | 341 | 324 | 21 | 9 | 2 | 1956.0 | 2246 | 1042 | 111 | 676 | 1174 |
| Gary Zenon | 2007-2016 | 36 | 35 | .507 | 4.90 | 568 | 0 | 0 | 0 | 46 | 857.3 | 902 | 467 | 174 | 304 | 543 |
| Jeffrey Zoll | 2001-2014 | 137 | 175 | .439 | 5.00 | 434 | 434 | 30 | 7 | 0 | 2686.0 | 2792 | 1492 | 408 | 1060 | 1738 |
| Kareem Zuniga | 2011-2015 | 22 | 16 | .579 | 3.01 | 291 | 0 | 0 | 0 | 27 | 398.0 | 380 | 133 | 19 | 113 | 345 |
| Luis Zuniga | 2012-2025 | 68 | 50 | .576 | 3.92 | 858 | 1 | 0 | 0 | 107 | 1095.0 | 1025 | 477 | 66 | 487 | 986 |
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