DataBaseball
2026

Head to head · 2026 pitching

Cionel Pérez vs Kai-Wei Teng

In 2026 Cionel Pérez has been worth 0.1 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.

2026 pitching. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
StatisticCionel PérezKai-Wei Teng
G4030
GS210
IP45.173.2
W45
SO4473
ERA4.764.76
FIP4.434.76
WHIP1.461.38
K/98.78.9
BB/93.84.0
FIP−106114
WAR0.20.1

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.
StatisticCionel PérezKai-Wei Teng
G29742
GS217
IP282.1114.1
W197
L911
SV60
SO262119
BB14858
ERA4.305.67
WHIP1.481.50
K/98.49.4
BB/94.74.6
HR/90.81.1
WAR1.80.2

More head to heads

The same seasons, measured against somebody else.

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.