Head to head · 2026 pitching

Sonny Gray vs Merrill Kelly

So far in 2026 Sonny Gray has been worth 3.7 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.

Sonny Gray BOS

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	Sonny Gray	Merrill Kelly
G	28	28
GS	28	28
IP	163.0	156.2
W	17	9
SO	146	111
ERA	2.82	5.00
FIP	3.51	5.40
WHIP	1.16	1.47
K/9	8.1	6.4
BB/9	2.5	4.0
FIP−	84	129
WAR	3.4	-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	Sonny Gray	Merrill Kelly
G	322	200
GS	315	200
IP	1,798.0	1,165.0
W	123	74
L	94	67
SV	0	0
SO	1,821	1,022
BB	572	369
ERA	3.60	3.93
WHIP	1.20	1.23
K/9	9.1	7.9
BB/9	2.9	2.9
HR/9	0.9	1.2
WAR	35.4	15.0

Sonny Gray’s full profile →Merrill Kelly’s full profile →

More head to heads

The same seasons, measured against somebody else.

Sonny Gray 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.