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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hikaru Yamaguchi | 2028-2029 | 11 | 4 | .733 | 2.09 | 46 | 22 | 1 | 0 | 0 | 180.2 | 120 | 42 | 8 | 52 | 237 |
| Akinori Yamauchi | 2031-2031 | 0 | 2 | .000 | 3.59 | 30 | 0 | 0 | 0 | 8 | 47.2 | 59 | 19 | 4 | 18 | 51 |
| Yu-bao Yep | 2029-2030 | 7 | 2 | .778 | 4.20 | 36 | 6 | 0 | 0 | 1 | 96.1 | 94 | 45 | 3 | 47 | 89 |
| Chang-soo Yi | 2033-2034 | 1 | 3 | .250 | 3.78 | 23 | 0 | 0 | 0 | 1 | 33.1 | 38 | 14 | 3 | 10 | 45 |
| Seung-soo Yi | 2031-2032 | 7 | 9 | .438 | 3.91 | 34 | 18 | 1 | 0 | 0 | 126.2 | 137 | 55 | 11 | 36 | 97 |
| Won-u Yi | 2027-2028 | 13 | 9 | .591 | 2.45 | 31 | 31 | 0 | 0 | 0 | 179.2 | 129 | 49 | 8 | 58 | 220 |
| Hakan Yilmanz | 2030-2031 | 0 | 0 | .000 | 2.79 | 8 | 0 | 0 | 0 | 0 | 9.2 | 4 | 3 | 2 | 3 | 20 |
| Narihira Yokota | 2034-2034 | 1 | 0 | 1.000 | 4.30 | 6 | 0 | 0 | 0 | 1 | 14.2 | 14 | 7 | 2 | 3 | 21 |
| Nam Yee Yong | 2026-2026 | 2 | 7 | .222 | 2.28 | 20 | 20 | 0 | 0 | 0 | 98.2 | 65 | 25 | 7 | 42 | 92 |
| Ryan York | 2026-2028 | 2 | 4 | .333 | 2.47 | 36 | 1 | 0 | 0 | 9 | 54.2 | 33 | 15 | 4 | 22 | 65 |
| Yoriyoshi Yoshimura | 2028-2028 | 1 | 0 | 1.000 | 3.21 | 2 | 2 | 0 | 0 | 0 | 14.0 | 10 | 5 | 2 | 2 | 19 |
| Tristan Young | 2023-2023 | 0 | 2 | .000 | 10.64 | 3 | 2 | 0 | 0 | 0 | 11.0 | 22 | 13 | 0 | 6 | 4 |
| Dong-soo Yun | 2031-2032 | 5 | 0 | 1.000 | 0.84 | 13 | 1 | 0 | 0 | 0 | 32.1 | 16 | 3 | 1 | 9 | 28 |
| Yong-hoon Yun | 2029-2030 | 5 | 7 | .417 | 4.26 | 28 | 16 | 0 | 0 | 1 | 129.0 | 132 | 61 | 10 | 50 | 95 |
