Answer: infieldfly

AnswerCrossword Clue
INFIELDFLY

Ump's call on a pop-up, perhaps

INFIELDFLY

Pop-up on a diamond

INFIELDFLY

Short pop-up

INFIELDFLY
Call on the diamond
INFIELDFLY
Baseball play
INFIELDFLYBaseball pop-up
INFIELDFLYPop-up.
INFIELDFLYGnat at home plate?