DataBaseball
2026

Head to head · 2026 pitching

Reid Detmers vs Juan Mejia

So far in 2026 Reid Detmers has been worth 3.9 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, season in progress. The stronger figure in each row is highlighted — for ERA, FIP, WHIP and walks that is the lower one.
StatisticReid DetmersJuan Mejia
G3162
GS311
IP179.067.0
W64
SO20464
ERA3.475.24
FIP3.064.28
WHIP1.051.69
K/910.38.6
BB/92.35.4
FIP−73102
WAR4.30.4

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.
StatisticReid DetmersJuan Mejia
G167117
GS1061
IP628.1128.1
W276
L398
SV35
SO702132
BB22665
ERA4.404.63
WHIP1.271.48
K/910.19.3
BB/93.24.6
HR/91.10.8
WAR9.71.3

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.