Jeff Karstens
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2012-04-07 | PIT | vs. PHI | W, 2-1 | 6.0 | 5 | 1 | 1 | 1 | 2 | 23 | 0 | 0 | 0 | 5 | 9 | SP |
| 2012-04-12 | PIT | @ LAD | L, 3-2 | 5.0 | 7 | 3 | 3 | 1 | 3 | 24 | 1 | 0 | 0 | 4 | 8 | SP, L |
| 2012-04-17 | PIT | @ ARI | W, 5-4 | 1.0 | 3 | 2 | 2 | 0 | 0 | 6 | 2 | 0 | 0 | 1 | 2 | SP |
| 2012-06-25 | PIT | @ PHI | L, 8-3 | 5.0 | 11 | 7 | 6 | 0 | 4 | 27 | 1 | 0 | 1 | 7 | 2 | SP, L |
| 2012-06-30 | PIT | @ STL | W, 7-3 | 7.0 | 4 | 2 | 2 | 2 | 7 | 27 | 1 | 0 | 0 | 6 | 7 | SP, W |
| 2012-07-05 | PIT | vs. HOU | W, 2-0 | 8.0 | 4 | 0 | 0 | 1 | 8 | 28 | 0 | 0 | 0 | 3 | 12 | SP, W |
| 2012-07-16 | PIT | @ COL | L, 5-4 | 7.0 | 6 | 4 | 4 | 2 | 4 | 28 | 2 | 0 | 0 | 7 | 9 | SP |
| 2012-07-22 | PIT | vs. MIA | W, 3-0 | 7.0 | 5 | 0 | 0 | 2 | 3 | 25 | 0 | 0 | 0 | 8 | 7 | SP, W |
| 2012-07-27 | PIT | @ HOU | W, 6-5 | 5.0 | 6 | 4 | 4 | 3 | 7 | 25 | 1 | 0 | 2 | 3 | 5 | SP |
| 2012-08-01 | PIT | @ CHC | W, 8-4 | 5.0 | 3 | 1 | 1 | 1 | 4 | 19 | 1 | 0 | 1 | 4 | 7 | SP, W |
| 2012-08-07 | PIT | vs. ARI | L, 10-4 | 6.0 | 8 | 3 | 3 | 0 | 4 | 26 | 2 | 0 | 1 | 8 | 5 | SP |
| 2012-08-13 | PIT | vs. LAD | L, 5-4 | 7.0 | 7 | 4 | 4 | 1 | 4 | 28 | 3 | 0 | 1 | 5 | 10 | SP, L |
| 2012-08-19 | PIT | @ STL | W, 6-3 | 7.0 | 2 | 2 | 2 | 1 | 4 | 25 | 1 | 0 | 0 | 8 | 9 | SP |
| 2012-08-25 | PIT | vs. MIL | W, 4-0 | 7.0 | 7 | 0 | 0 | 0 | 4 | 27 | 1 | 0 | 0 | 9 | 7 | SP, W |
| 2012-08-31 | PIT | @ MIL | L, 9-3 | 0.1 | 5 | 4 | 4 | 0 | 1 | 6 | 1 | 0 | 1 | 0 | 0 | SP, L |
| 2012-09-19 | PIT | vs. MIL | L, 3-1 | 3.0 | 2 | 1 | 1 | 0 | 2 | 11 | 0 | 1 | 0 | 3 | 3 | RP |
| 2012-09-24 | PIT | @ NYM | L, 6-2 | 1.1 | 2 | 2 | 2 | 0 | 2 | 6 | 0 | 0 | 1 | 1 | 1 | RP |
| 2012-09-26 | PIT | @ NYM | L, 6-0 | 2.0 | 2 | 1 | 1 | 0 | 2 | 8 | 0 | 0 | 0 | 0 | 3 | RP |
| 2012-10-01 | PIT | vs. ATL | W, 2-1 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 1 | 1 | RP |
| Total Games: 19 | ||||||||||||||||