Mitch Keller
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-04-04 | PIT | @ CHC | L, 4-3 | 3.0 | 2 | 3 | 3 | 4 | 4 | 15 | 0 | 0 | 1 | 2 | 3 | SP, L |
| 2021-04-10 | PIT | vs. CHC | W, 8-2 | 5.0 | 5 | 1 | 1 | 1 | 7 | 21 | 1 | 0 | 0 | 4 | 4 | SP, W |
| 2021-04-15 | PIT | vs. SDP | L, 8-3 | 3.1 | 9 | 7 | 7 | 3 | 1 | 21 | 4 | 0 | 1 | 3 | 5 | SP, L |
| 2021-04-22 | PIT | @ DET | W, 4-2 | 5.0 | 5 | 2 | 2 | 0 | 5 | 20 | 1 | 1 | 1 | 6 | 4 | SP |
| 2021-04-28 | PIT | vs. KCR | L, 9-6 | 2.1 | 3 | 4 | 4 | 5 | 2 | 15 | 2 | 1 | 0 | 3 | 2 | SP, L |
| 2021-05-04 | PIT | @ SDP | W, 2-1 | 5.2 | 2 | 0 | 0 | 2 | 5 | 21 | 0 | 0 | 0 | 3 | 9 | SP, W |
| 2021-05-10 | PIT | vs. CIN | L, 14-1 | 3.1 | 7 | 7 | 7 | 2 | 2 | 18 | 2 | 0 | 1 | 4 | 3 | SP, L |
| 2021-05-16 | PIT | vs. SFG | L, 4-1 | 5.0 | 6 | 2 | 2 | 3 | 8 | 24 | 1 | 0 | 0 | 2 | 5 | SP, L |
| 2021-05-22 | PIT | @ ATL | L, 6-1 | 5.0 | 8 | 5 | 5 | 1 | 6 | 25 | 1 | 0 | 2 | 1 | 8 | SP, L |
| 2021-05-29 | PIT | vs. COL | W, 4-0 | 5.0 | 2 | 0 | 0 | 2 | 6 | 19 | 1 | 0 | 0 | 4 | 5 | SP, W |
| 2021-06-04 | PIT | vs. MIA | W, 9-2 | 2.0 | 2 | 2 | 2 | 3 | 2 | 11 | 2 | 0 | 0 | 4 | 0 | SP |
| 2021-06-10 | PIT | vs. LAD | L, 6-3 | 2.2 | 5 | 4 | 4 | 3 | 3 | 18 | 0 | 0 | 1 | 1 | 3 | SP, L |
| 2021-08-01 | PIT | vs. PHI | L, 15-4 | 5.0 | 8 | 4 | 4 | 0 | 2 | 23 | 5 | 0 | 0 | 3 | 7 | SP, L |
| 2021-08-07 | PIT | @ CIN | L, 11-3 | 5.0 | 7 | 4 | 4 | 4 | 4 | 24 | 1 | 0 | 1 | 4 | 3 | SP, L |
| 2021-08-14 | PIT | vs. MIL | L, 6-0 | 4.1 | 9 | 2 | 2 | 1 | 3 | 20 | 1 | 0 | 0 | 5 | 2 | SP, L |
| 2021-08-20 | PIT | @ STL | W, 4-0 | 5.0 | 6 | 0 | 0 | 1 | 6 | 21 | 0 | 0 | 0 | 4 | 4 | SP, W |
| 2021-08-26 | PIT | vs. STL | W, 11-7 | 5.1 | 6 | 7 | 7 | 3 | 2 | 25 | 1 | 0 | 2 | 4 | 8 | SP |
| 2021-09-02 | PIT | @ CHC | L, 6-5 | 6.0 | 6 | 0 | 0 | 0 | 8 | 24 | 0 | 0 | 0 | 6 | 4 | SP |
| 2021-09-08 | PIT | vs. DET | L, 5-1 | 5.0 | 10 | 4 | 4 | 1 | 6 | 24 | 1 | 0 | 0 | 7 | 0 | SP, L |
| 2021-09-15 | PIT | vs. CIN | W, 5-4 | 5.0 | 4 | 2 | 2 | 2 | 3 | 21 | 1 | 0 | 0 | 4 | 7 | SP |
| 2021-09-21 | PIT | @ CIN | W, 6-2 | 5.2 | 7 | 2 | 2 | 4 | 2 | 25 | 0 | 0 | 0 | 3 | 9 | SP, W |
| 2021-09-28 | PIT | vs. CHC | W, 8-6 | 4.0 | 9 | 6 | 6 | 3 | 2 | 22 | 2 | 0 | 0 | 6 | 2 | SP |
| 2021-10-03 | PIT | vs. CIN | L, 6-3 | 3.0 | 3 | 1 | 1 | 1 | 3 | 13 | 2 | 0 | 0 | 2 | 3 | SP |
| Total Games: 23 | ||||||||||||||||