Luis Castillo had a record of 7-3 with an ERA of 3.91 and 102 strikeouts in 15 appearances after the All-Star Game in 2023.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | L. Castillo | 7/14/2023 |  SEA | vs |  DET | L | 1 | 5.40 | 5 | 0 | 0 | 0 | 5.0 | 4 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 19 | 0 |
| 2 | | L. Castillo | 7/19/2023 | SEA | vs |  MIN | 1 | 4.50 | 11 | 0 | 0 | 0 | 6.0 | 6 | 3 | 3 | 2 | 2 | 0 | 0 | 0 | 26 | 0 | |
| 3 | | L. Castillo | 7/24/2023 | SEA | @ | MIN | 1 | 2.57 | 9 | 0 | 0 | 0 | 7.0 | 4 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 25 | 0 | |
| 4 | | L. Castillo | 7/30/2023 | SEA | @ |  ARI | W | 1 | 0.00 | 7 | 0 | 0 | 0 | 6.0 | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 21 | 0 |
| 5 | | L. Castillo | 8/4/2023 | SEA | @ |  LAA | 1 | 10.50 | 6 | 0 | 0 | 0 | 6.0 | 10 | 7 | 7 | 3 | 1 | 0 | 0 | 0 | 29 | 0 | |
| 6 | | L. Castillo | 8/11/2023 | SEA | vs |  BAL | W | 1 | 1.50 | 8 | 0 | 0 | 0 | 6.0 | 2 | 1 | 1 | 1 | 2 | 0 | 0 | 0 | 22 | 0 |
| 7 | | L. Castillo | 8/16/2023 | SEA | @ |  KCR | W | 1 | 5.14 | 3 | 0 | 0 | 0 | 7.0 | 9 | 4 | 4 | 0 | 1 | 0 | 0 | 0 | 30 | 0 |
| 8 | | L. Castillo | 8/21/2023 | SEA | @ |  CWS | W | 1 | 1.29 | 9 | 0 | 0 | 0 | 7.0 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 26 | 0 |
| 9 | | L. Castillo | 8/27/2023 | SEA | vs | KCR | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 7.0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 23 | 0 |
| 10 | | L. Castillo | 9/2/2023 | SEA | @ |  NYM | 1 | 9.00 | 2 | 0 | 0 | 0 | 5.0 | 8 | 5 | 5 | 2 | 2 | 1 | 0 | 0 | 26 | 0 | |
| 11 | | L. Castillo | 9/7/2023 | SEA | @ |  TBR | W | 1 | 0.00 | 8 | 0 | 0 | 0 | 6.0 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 25 | 0 |
| 12 | | L. Castillo | 9/13/2023 | SEA | vs | LAA | W | 1 | 3.00 | 8 | 0 | 0 | 0 | 6.0 | 3 | 2 | 2 | 1 | 3 | 0 | 0 | 0 | 24 | 0 |
| 13 | | L. Castillo | 9/19/2023 | SEA | @ |  OAK | 1 | 2.57 | 8 | 0 | 0 | 0 | 7.0 | 5 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | 27 | 0 | |
| 14 | | L. Castillo | 9/25/2023 | SEA | vs |  HOU | L | 1 | 7.50 | 8 | 0 | 0 | 0 | 6.0 | 8 | 5 | 5 | 2 | 1 | 0 | 0 | 0 | 26 | 0 |
| 15 | | L. Castillo | 9/30/2023 | SEA | vs |  TEX | L | 1 | 13.50 | 4 | 0 | 0 | 0 | 2.2 | 5 | 4 | 4 | 0 | 5 | 0 | 0 | 0 | 18 | 0 |
| Total | 15 | 3.91 | 102 | 0 | 0 | 0 | 89.2 | 76 | 39 | 39 | 13 | 28 | 2 | 0 | 0 | 367 | 0 |
Some of the information used here was obtained free of charge from Retrosheet.
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