DataBaseball
2026

Head to head · 2026 pitching

Seth Halvorsen vs Justin Topa

In 2026 Justin Topa has been worth 0.2 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.
StatisticSeth HalvorsenJustin Topa
G3225
GS00
IP29.022.0
W10
SO2315
ERA5.906.95
FIP6.176.01
WHIP1.721.95
K/97.16.1
BB/95.34.9
FIP−148144
WAR-0.5-0.3

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.
StatisticSeth HalvorsenJustin Topa
G86174
GS01
IP81.0171.2
W46
L511
SV139
SO72144
BB4053
ERA4.784.19
WHIP1.511.41
K/98.07.5
BB/94.42.8
HR/91.70.7
WAR-0.52.4

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.