Head to head · 2026 pitching

Jake Bird vs Cionel Pérez

In 2026 the two have been worth the same 0.2 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.

Jake Bird NYY

Cionel Pérez NYM

2026 pitching. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
Statistic	Jake Bird	Cionel Pérez
G	44	40
GS	0	2
IP	38.2	45.1
W	1	4
SO	41	44
ERA	5.35	4.76
FIP	4.40	4.43
WHIP	1.42	1.46
K/9	9.5	8.7
BB/9	3.0	3.8
FIP−	105	106
WAR	0.2	0.2

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	Jake Bird	Cionel Pérez
G	235	297
GS	3	2
IP	271.0	282.1
W	12	19
L	12	9
SV	1	6
SO	257	262
BB	113	148
ERA	4.85	4.30
WHIP	1.46	1.48
K/9	8.5	8.4
BB/9	3.8	4.7
HR/9	1.0	0.8
WAR	1.9	1.8

Jake Bird’s full profile →Cionel Pérez’s full profile →

More head to heads

The same seasons, measured against somebody else.

Jake Bird vs

Cionel Pérez 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.