DataBaseball
2026

Head to head · 2026 pitching

Reid Detmers vs Juan Mejia

In 2026 Reid Detmers 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.

2026 season

2026 pitching. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
StatisticReid DetmersJuan Mejia
G3265
GS321
IP185.070.0
W74
SO21166
ERA3.365.27
FIP3.024.17
WHIP1.041.69
K/910.38.5
BB/92.35.1
FIP−72100
WAR4.60.5

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.
StatisticReid DetmersJuan Mejia
G168120
GS1071
IP634.1131.1
W286
L398
SV35
SO709134
BB22865
ERA4.364.66
WHIP1.271.48
K/910.19.2
BB/93.24.5
HR/91.10.8
WAR10.01.4

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.