Head to head · 2026 pitching

Kumar Rocker vs Trevor Williams

In 2026 Kumar Rocker has been worth 1.1 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.

Their 2025 seasons were among each other's nearest on rate statistics.

Kumar Rocker TEX

Trevor Williams WSH

2026 season

2026 pitching. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
Statistic	Kumar Rocker	Trevor Williams
G	30	15
GS	27	1
IP	148.0	28.2
W	6	2
SO	138	34
ERA	4.38	3.14
FIP	4.31	3.80
WHIP	1.41	1.19
K/9	8.4	10.7
BB/9	3.7	3.1
FIP−	103	91
WAR	1.4	0.3

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.

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 season table.
Statistic	Kumar Rocker	Trevor Williams
G	47	234
GS	44	179
IP	224.0	1,037.2
W	10	55
L	18	65
SV	0	1
SO	208	859
BB	90	333
ERA	4.74	4.42
WHIP	1.43	1.37
K/9	8.4	7.5
BB/9	3.6	2.9
HR/9	1.3	1.3
WAR	1.7	9.1

Kumar Rocker’s full profile →Trevor Williams’s full profile →

More head to heads

The same seasons, measured against somebody else.

Kumar Rocker vs

Trevor Williams 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.