← Chicago Cubs
David Peterson
Chicago Cubs
SP · #19 · Bats L · Throws L · 6'6" · 240 lb · Age 31 · 7 yrs in MLB
2026 grade
23.9
- Runs prevented
- −0.4
- IP · ERA
- 148.1 · 4.79
- K · BB
- 137 · 65
- Rank
- Not qualified
What the grade is made of
Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.
- Home runs allowed15 vs 20 avg+7.2
- Strikeouts137 vs 147 avg−2.8
- Walks65 vs 57 avg−2.5
- Contact allowed (how it turned out counts a quarter)440 vs 429 avg−2.1
- Parks pitched in−1.4
- Hit batters4 vs 8 avg+1.3
2026 game log: pitching
Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.
| Game | Result | Dec | IP | H | R | ER | BB | K | HR | PC | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wed, Sep 30@SDPostseason | L 1-4 | 1.2 | 1 | 0 | 0 | 0 | 1 | 0 | 28 | 67.5 | |
| Fri, Sep 25@BOS | L 0-2 | GS | 5.0 | 3 | 0 | 0 | 2 | 6 | 0 | 91 | 78.9 |
| Sun, Sep 20@CIN | W 9-1 | W | 6.0 | 3 | 1 | 1 | 1 | 7 | 1 | 83 | 85.6 |
| Mon, Sep 14vsATL | W 7-3 | W | 6.0 | 3 | 1 | 1 | 3 | 7 | 0 | 85 | 83.6 |
| Tue, Sep 8@MIL | L 3-4 | GS | 4.1 | 6 | 1 | 1 | 3 | 4 | 0 | 83 | 25.6 |
| Wed, Sep 2vsMIL | L 5-9 | L | 3.2 | 7 | 6 | 6 | 4 | 4 | 1 | 96 | 7.4 |
| Fri, Aug 28vsCIN | L 8-10 | GS | 5.0 | 6 | 2 | 2 | 3 | 6 | 1 | 88 | 31.1 |
| Sat, Aug 22@SEA | L 4-5 | GS | 6.0 | 4 | 2 | 2 | 2 | 8 | 1 | 98 | 60.5 |
| Mon, Aug 17vsCHW | W 7-5 | 1.1 | 0 | 0 | 0 | 1 | 1 | 0 | 22 | 61.9 | |
| Wed, Aug 12@WSH | W 12-6 | W | 5.0 | 9 | 4 | 3 | 3 | 6 | 0 | 90 | 21.4 |
| Thu, Aug 6vsTOR | W 3-2 | GS | 5.0 | 7 | 1 | 1 | 3 | 3 | 0 | 89 | 25.5 |
| Sat, Aug 1vsNYY | W 5-2 | GS | 6.1 | 5 | 2 | 1 | 0 | 8 | 1 | 97 | 77.6 |
| Mon, Jul 27@STL | W 7-3 | W | 5.2 | 3 | 2 | 2 | 2 | 3 | 1 | 86 | 75.9 |
| Tue, Jul 21vsDET | W 11-2 | W | 6.2 | 3 | 0 | 0 | 1 | 4 | 0 | 94 | 94.4 |
| Thu, Jul 9@BAL | L 2-3 | GS | 5.0 | 2 | 1 | 1 | 4 | 2 | 1 | 77 | 56.4 |
| Fri, Jul 3vsSTL | L 1-17 | L | 3.2 | 9 | 10 | 10 | 3 | 3 | 1 | 91 | 2.9 |
| Sat, Jun 27@MIL | W 8-2 | W | 5.2 | 5 | 2 | 2 | 0 | 2 | 1 | 69 | 54.1 |
| Sun, Jun 21@PHI | L 2-6 | L | 4.0 | 6 | 5 | 4 | 2 | 5 | 1 | 79 | 22.9 |
| Mon, Jun 15@CIN | L 0-12 | 3.0 | 2 | 3 | 3 | 2 | 1 | 1 | 54 | 36.1 | |
| Wed, Jun 10vsSTL | L 2-9 | 3.2 | 7 | 6 | 6 | 2 | 1 | 2 | 63 | 1.0 | |
| Sun, May 31vsMIA | W 10-1 | S | 4.0 | 1 | 0 | 0 | 1 | 3 | 0 | 51 | 99.6 |
| Tue, May 26vsCIN | L 2-7 | L | 5.0 | 11 | 6 | 6 | 3 | 4 | 0 | 90 | 3.2 |
| Thu, May 21@WSH | W 2-1 | W | 5.0 | 4 | 1 | 1 | 3 | 3 | 0 | 82 | 62.3 |
| Sat, May 16vsNYY | W 6-3 | W | 4.0 | 6 | 2 | 2 | 3 | 8 | 0 | 82 | 5.3 |
| Sun, May 10@ARI | L 1-5 | 5.0 | 4 | 3 | 0 | 0 | 3 | 0 | 77 | 99.6 | |
| Mon, May 4@COL | W 4-2 | W | 4.0 | 3 | 2 | 2 | 0 | 6 | 0 | 69 | 97.0 |
| Wed, Apr 29vsWSH | L 2-14 | L | 3.2 | 5 | 7 | 7 | 3 | 5 | 0 | 80 | 37.7 |
| Thu, Apr 23vsMIN | W 10-8 | H | 3.1 | 4 | 1 | 1 | 1 | 2 | 1 | 45 | 22.6 |
| Sun, Apr 19@CHC | L 1-2 | 3.2 | 3 | 0 | 0 | 0 | 1 | 0 | 47 | 37.2 | |
| Mon, Apr 13@LAD | L 0-4 | L | 5.0 | 5 | 4 | 4 | 4 | 7 | 1 | 89 | 20.4 |
| Wed, Apr 8vsARI | L 2-7 | L | 5.0 | 6 | 5 | 5 | 2 | 6 | 0 | 85 | 39.3 |
| Thu, Apr 2@SF | L 2-7 | L | 4.1 | 9 | 6 | 5 | 2 | 5 | 0 | 68 | 12.1 |
| Sat, Mar 28vsPIT | W 4-2 | GS | 5.1 | 6 | 0 | 0 | 2 | 3 | 0 | 76 | 66.2 |
Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.