Head to head · Career pitching
Jacob deGrom vs Dan Haren
In 2015 Jacob deGrom has been worth 4.2 more wins. Both lines are computed from play-by-play on the same constants, so they are measured the same way rather than quoted from two sources.
- Two of the 25 most valuable pitching careers on this site, 2005–2026, by dbWAR.
Career
Totalled over the seasons published here, which is not the same as a whole career: a player who debuted before 2005 begins at 2005, not at his real first game.
| Statistic | Jacob deGrom | Dan Haren |
|---|---|---|
| G | 279 | 363 |
| GS | 279 | 361 |
| IP | 1,702.1 | 2,301.0 |
| W | 107 | 147 |
| L | 76 | 121 |
| SV | 0 | 1 |
| SO | 2,052 | 1,938 |
| BB | 391 | 461 |
| ERA | 2.73 | 3.70 |
| WHIP | 1.00 | 1.17 |
| K/9 | 10.8 | 7.6 |
| BB/9 | 2.1 | 1.8 |
| HR/9 | 0.9 | 1.1 |
| WAR | 47.2 | 36.8 |
2015 season
| Statistic | Jacob deGrom | Dan Haren |
|---|---|---|
| G | 30 | 32 |
| GS | 30 | 32 |
| IP | 191.0 | 187.1 |
| W | 14 | 11 |
| SO | 205 | 132 |
| ERA | 2.54 | 3.60 |
| FIP | 2.70 | 4.61 |
| WHIP | 0.98 | 1.13 |
| K/9 | 9.7 | 6.3 |
| BB/9 | 1.8 | 1.8 |
| FIP− | 68 | 116 |
| WAR | 4.9 | 0.7 |
Postseason
Box-score figures only: October is kept out of the season constants, so there is no wOBA, FIP or dbWAR for it.
| Statistic | Jacob deGrom | Dan Haren |
|---|---|---|
| G | 5 | 2 |
| GS | 5 | 2 |
| IP | 31.0 | 11.0 |
| W | 4 | 1 |
| SV | 0 | 0 |
| SO | 37 | 9 |
| BB | 10 | 3 |
| ERA | 2.90 | 4.09 |
| WHIP | 1.16 | 1.73 |
| K/9 | 10.7 | 7.4 |
| BB/9 | 2.9 | 2.5 |
More head to heads
The same seasons, measured against somebody else.
FIP uses the constant solved from this season’s own runs, and FIP− is park-adjusted against the same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page. To put these two beside a third, the comparison page takes up to four.

