John Costello
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1988-06-02 | STL | @ PHI | W, 3-2 | 1.2 | 0 | 0 | 0 | 0 | 3 | 5 | 0 | 0 | 0 | 0 | 2 | RP, W |
| 1988-06-03 | STL | @ PHI | W, 5-4 | 2.0 | 0 | 0 | 0 | 1 | 1 | 7 | 0 | 0 | 0 | 0 | 5 | RP |
| 1988-06-10 | STL | vs. CHC | L, 7-3 | 2.0 | 3 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 1 | 4 | RP |
| 1988-06-21 | STL | @ MON | L, 7-0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 2 | 1 | RP |
| 1988-06-24 | STL | vs. PHI | L, 7-6 | 1.0 | 1 | 0 | 0 | 1 | 1 | 5 | 1 | 0 | 0 | 1 | 1 | RP |
| 1988-06-26 | STL | vs. PHI | L, 7-5 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 1 | 1 | RP |
| 1988-06-27 | STL | vs. MON | L, 6-3 | 0.2 | 2 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | 1 | 0 | RP |
| 1988-06-28 | STL | vs. MON | W, 5-4 | 0.2 | 1 | 0 | 0 | 1 | 1 | 4 | 0 | 0 | 0 | 1 | 0 | RP |
| 1988-07-01 | STL | @ SDP | L, 5-1 | 0.2 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 0 | 2 | 0 | RP |
| 1988-07-02 | STL | @ SDP | L, 7-5 | 0.0 | 2 | 2 | 2 | 0 | 0 | 2 | 1 | 0 | 1 | 0 | 0 | RP |
| 1988-07-09 | STL | @ SFG | L, 21-2 | 2.0 | 0 | 0 | 0 | 1 | 2 | 6 | 0 | 0 | 0 | 1 | 2 | RP |
| 1988-07-16 | STL | vs. SDP | W, 3-2 | 0.2 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | RP, W |
| 1988-07-20 | STL | vs. LAD | W, 8-7 | 1.1 | 2 | 0 | 0 | 0 | 1 | 6 | 0 | 0 | 0 | 0 | 3 | RP, W |
| 1988-07-22 | STL | vs. SFG | W, 4-2 | 2.0 | 1 | 0 | 0 | 2 | 1 | 8 | 0 | 0 | 0 | 0 | 3 | RP |
| 1988-07-24 | STL | vs. SFG | L, 5-0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 2 | RP |
| 1988-07-27 | STL | vs. PIT | L, 3-2 | 0.1 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | RP |
| 1988-07-28 | STL | @ MON | L, 4-3 | 0.1 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | RP |
| 1988-08-04 | STL | vs. PHI | W, 9-2 | 2.0 | 1 | 0 | 0 | 1 | 1 | 8 | 1 | 0 | 0 | 2 | 3 | RP |
| 1988-08-06 | STL | vs. MON | L, 5-4 | 3.0 | 2 | 0 | 0 | 2 | 4 | 11 | 0 | 0 | 0 | 2 | 1 | RP |
| 1988-08-11 | STL | @ PHI | L, 1-0 | 3.1 | 5 | 1 | 1 | 1 | 4 | 16 | 1 | 0 | 0 | 1 | 5 | RP, L |
| 1988-08-14 | STL | @ CHC | L, 8-3 | 0.2 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 2 | RP |
| 1988-08-16 | STL | vs. HOU | W, 3-0 | 0.1 | 1 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 0 | 1 | 0 | RP |
| 1988-08-19 | STL | vs. CIN | W, 10-4 | 2.2 | 1 | 0 | 0 | 1 | 1 | 10 | 0 | 0 | 0 | 1 | 6 | RP, W |
| 1988-08-22 | STL | vs. ATL | L, 5-3 | 2.0 | 0 | 0 | 0 | 0 | 2 | 6 | 0 | 0 | 0 | 1 | 3 | RP |
| 1988-08-25 | STL | @ CIN | L, 4-1 | 2.2 | 2 | 0 | 0 | 2 | 2 | 12 | 1 | 0 | 0 | 2 | 4 | RP |
| 1988-08-29 | STL | @ ATL | W, 3-2 | 1.2 | 0 | 0 | 0 | 0 | 2 | 5 | 0 | 0 | 0 | 1 | 2 | RP, SV |
| 1988-09-03 | STL | @ HOU | L, 10-1 | 0.1 | 2 | 2 | 2 | 3 | 0 | 6 | 0 | 0 | 0 | 0 | 1 | RP |
| 1988-09-04 | STL | @ HOU | L, 4-3 | 2.2 | 3 | 0 | 0 | 1 | 2 | 12 | 0 | 1 | 0 | 2 | 4 | RP |
| 1988-09-11 | STL | vs. CHC | W, 3-2 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 2 | RP |
| 1988-09-14 | STL | @ PHI | L, 9-2 | 1.2 | 4 | 3 | 3 | 0 | 1 | 9 | 1 | 0 | 1 | 1 | 3 | RP |
| 1988-09-17 | STL | @ CHC | L, 6-4 | 2.1 | 5 | 2 | 2 | 0 | 1 | 13 | 1 | 0 | 1 | 2 | 3 | RP, L |
| 1988-09-19 | STL | vs. PIT | L, 5-4 | 0.2 | 1 | 1 | 0 | 2 | 0 | 5 | 0 | 0 | 0 | 1 | 0 | RP |
| 1988-09-23 | STL | vs. NYM | W, 2-1 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 3 | RP, W |
| 1988-09-24 | STL | vs. NYM | L, 14-1 | 1.0 | 2 | 4 | 0 | 2 | 0 | 8 | 0 | 0 | 0 | 1 | 2 | RP |
| 1988-09-27 | STL | @ PIT | L, 3-2 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | RP |
| 1988-10-02 | STL | @ NYM | L, 7-5 | 2.0 | 1 | 0 | 0 | 0 | 4 | 6 | 0 | 0 | 0 | 1 | 0 | RP |
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
| Totals | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ||||
| 162 Game Avg. | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |