Hammer is the 107th most-used weapon under the current filters (0.2% of 528,808 recorded fights), winning 24.6% overall - 13.2% of its wins come against better-geared opponents.
Best against Battleaxe (40.0%), Longbow (23.5%), Realmbreaker (20.0%). Struggles against Dawnsong (4.8%), Spiked Gauntlets (5.1%), Battle Bracers (7.9%).
Winrate by IP difference (50-IP buckets, dot size = sample size). A flat curve means the weapon carries regardless of gear; a steep one means it only wins when out-gearing.