Head to head · 2026 pitching

Jacob deGrom vs Merrill Kelly

So far in 2026 Jacob deGrom has been worth 4.1 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.

Jacob deGrom TEX

Merrill Kelly AZ

2026 pitching, season in progress. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
Statistic	Jacob deGrom	Merrill Kelly
G	29	28
GS	29	28
IP	154.1	156.2
W	11	9
SO	194	111
ERA	3.79	5.00
FIP	3.05	5.40
WHIP	1.07	1.47
K/9	11.3	6.4
BB/9	2.3	4.0
FIP−	73	129
WAR	3.8	-0.3

Career

Totalled over the seasons published here, which is not the same as a whole career: a player who debuted before 2015 begins at 2015, not at his real first game.

Career pitching totals. ERA, WHIP and the per-nine rates are recomputed from the components rather than averaged; FIP needs each season’s own constant and is left to the table above.
Statistic	Jacob deGrom	Merrill Kelly
G	255	200
GS	255	200
IP	1,553.2	1,165.0
W	98	74
L	68	67
SV	0	0
SO	1,901	1,022
BB	341	369
ERA	2.68	3.93
WHIP	0.98	1.23
K/9	11.0	7.9
BB/9	2.0	2.9
HR/9	0.9	1.2
WAR	43.8	15.0

Jacob deGrom’s full profile →Merrill Kelly’s full profile →

More head to heads

The same seasons, measured against somebody else.

Jacob deGrom vs

Merrill Kelly vs

How these are computed

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.