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| "Y" 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 |
| Ogu Yahei | 2010-2013 | 7 | 8 | .467 | 4.47 | 165 | 0 | 0 | 0 | 2 | 179.3 | 188 | 89 | 20 | 75 | 52 | 4.6 |
| Ian Yarberry | 2013-2017 | 0 | 1 | .000 | 6.02 | 3 | 0 | 0 | 0 | 0 | 3.0 | 2 | 2 | 0 | 3 | 0 | 0.5 |
| Ron Yarbrough | 2000-2011 | 105 | 103 | .505 | 3.92 | 370 | 272 | 19 | 6 | 2 | 1936.3 | 1776 | 843 | 188 | 634 | 939 | 83.0 |
| Alan Yelverton | 2000-2001 | 14 | 19 | .424 | 3.81 | 50 | 50 | 0 | 0 | 0 | 274.3 | 209 | 116 | 42 | 75 | 314 | 15.8 |
| Juan Yeyati | 2027-2029 | 5 | 10 | .333 | 4.24 | 22 | 22 | 1 | 0 | 0 | 116.7 | 119 | 55 | 18 | 70 | 68 | 2.8 |
| James Yim | 2003-2021 | 331 | 148 | .691 | 2.13 | 624 | 609 | 89 | 52 | 0 | 4445.9 | 2755 | 1050 | 295 | 803 | 4714 | 443.2 |
| Malcolm Yokum | 2000-2002 | 6 | 6 | .500 | 4.92 | 88 | 6 | 0 | 0 | 0 | 117.0 | 134 | 64 | 15 | 52 | 74 | 2.9 |
| Curtis Yoo | 2013-2027 | 133 | 111 | .545 | 3.26 | 530 | 345 | 3 | 2 | 6 | 2331.9 | 2016 | 844 | 202 | 784 | 1438 | 143.4 |
| Iwao Yoshikawa | 2023-2023 | 0 | 0 | .000 | 4.50 | 1 | 0 | 0 | 0 | 0 | 2.0 | 1 | 1 | 1 | 3 | 2 | 0.1 |
| John Yoshiyuki | 2029-2029 | 1 | 0 | 1.000 | 0.00 | 1 | 0 | 0 | 0 | 0 | 2.0 | 2 | 0 | 0 | 4 | 0 | 0.1 |
| Bob Younker | 2000-2001 | 4 | 5 | .444 | 5.07 | 67 | 0 | 0 | 0 | 0 | 71.0 | 86 | 40 | 11 | 20 | 55 | 1.3 |
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