Answer: slugger

AnswerCrossword Clue
SLUGGER

Batman?

SLUGGER

Offensive asset on the diamond

SLUGGER

Homer's creator

SLUGGER
Power hitter
SLUGGER
A success at the plate.
SLUGGERMays, for one
SLUGGERCleanup man
SLUGGERRuth, for one
SLUGGERFly swatter
SLUGGERRuth, notably