Roger Clemens struck out his most batters in a game on September 18, 1996 and on April 29, 1986, with 20 strikeouts.
| NAME | SO | DATE | TM | OPP | DEC | GS | ERA | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Clemens | 20 | 9/18/1996 |  BOS | @ |  DET | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 1 |
| 2 | | R. Clemens | 20 | 4/29/1986 | BOS | vs |  SEA | W | 1 | 1.00 | 1 | 0 | 0 | 9.0 | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 30 | 0 |
| 3 |  | R. Clemens | 18 | 8/25/1998 |  TOR | vs |  KCR | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 0 |
| 4 | | R. Clemens | 16 | 7/12/1997 | TOR | @ |  BOS | W | 1 | 1.13 | 0 | 0 | 0 | 8.0 | 4 | 1 | 1 | 0 | 0 | 2 | 0 | 0 | 30 | 0 |
| 5 | | R. Clemens | 16 | 7/15/1988 | BOS | vs | KCR | W | 1 | 0.00 | 1 | 0 | 0 | 9.0 | 5 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 34 | 0 |
| 6 | | R. Clemens | 16 | 5/9/1988 | BOS | @ | KCR | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 31 | 0 |
| 7 | | R. Clemens | 15 | 9/21/1998 | TOR | vs |  BAL | W | 1 | 1.13 | 0 | 0 | 0 | 8.0 | 7 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 34 | 0 |
| 8 | | R. Clemens | 15 | 8/15/1998 | TOR | vs |  ANA | 1 | 2.25 | 0 | 0 | 0 | 8.0 | 6 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 31 | 0 | |
| 9 | | R. Clemens | 15 | 7/9/1988 | BOS | @ |  CWS | 1 | 2.25 | 0 | 0 | 0 | 8.0 | 3 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 29 | 0 | |
| 10 | | R. Clemens | 15 | 8/21/1984 | BOS | vs | KCR | W | 1 | 1.00 | 1 | 0 | 0 | 9.0 | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 33 | 0 |
| 11 | | R. Clemens | 14 | 8/2/1998 | TOR | @ |  MIN | W | 1 | 1.13 | 0 | 0 | 0 | 8.0 | 6 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 31 | 0 |
| 12 | | R. Clemens | 14 | 9/7/1997 | TOR | vs |  TEX | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 31 | 1 |
| 13 | | R. Clemens | 14 | 5/10/1997 | TOR | @ | MIN | W | 1 | 5.14 | 0 | 0 | 0 | 7.0 | 8 | 4 | 4 | 1 | 0 | 1 | 0 | 0 | 29 | 1 |
| 14 | | R. Clemens | 14 | 7/25/1988 | BOS | @ |  TEX | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 3 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 33 | 1 |
| 15 | | R. Clemens | 14 | 7/26/1987 | BOS | vs |  SEA | W | 1 | 0.00 | 1 | 0 | 0 | 9.0 | 8 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 35 | 0 |
| 16 |  | R. Clemens | 13 | 6/3/2002 |  NYY | vs |  BAL | 1 | 2.57 | 0 | 0 | 0 | 7.0 | 6 | 2 | 2 | 0 | 2 | 0 | 0 | 1 | 27 | 1 | |
| 17 | | R. Clemens | 13 | 5/19/2002 | NYY | vs | MIN | W | 1 | 0.00 | 0 | 0 | 0 | 8.0 | 4 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 30 | 0 |
| 18 | | R. Clemens | 13 | 5/28/2000 | NYY | vs | BOS | L | 1 | 2.00 | 1 | 0 | 0 | 9.0 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 30 | 0 |
| 19 | | R. Clemens | 13 | 6/17/1999 | NYY | vs | TEX | L | 1 | 3.86 | 0 | 0 | 0 | 7.0 | 9 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | 31 | 0 |
| 20 | | R. Clemens | 13 | 8/12/1997 | TOR | vs | MIN | W | 1 | 1.00 | 1 | 0 | 0 | 9.0 | 8 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 35 | 0 |
| 21 | | R. Clemens | 13 | 5/1/1996 | BOS | vs | DET | W | 1 | 1.00 | 1 | 0 | 0 | 9.0 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 33 | 0 |
| 22 | | R. Clemens | 13 | 5/11/1993 | BOS | @ | BAL | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 5 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 34 | 0 |
| 23 | | R. Clemens | 13 | 8/31/1989 | BOS | vs |  CAL | W | 1 | 2.00 | 1 | 0 | 0 | 9.0 | 8 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 35 | 0 |
| 24 | | R. Clemens | 13 | 7/30/1988 | BOS | vs |  MIL | W | 1 | 2.00 | 1 | 0 | 0 | 9.0 | 7 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 34 | 0 |
| 25 | | R. Clemens | 13 | 4/14/1988 | BOS | vs | MIL | W | 1 | 0.00 | 1 | 1 | 0 | 9.0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 33 | 0 |
Results may be incomplete. StatMuse has complete game-level data for strikeouts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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