Answer: klem

AnswerCrossword Clue
KLEM

Hall of Fame umpire Bill who was nicknamed "The Old Arbitrator"

KLEM

Umpire in the baseball Hall of Fame.

KLEM

Name in baseball's Hall of Fame.

KLEM
Hall of Fame umpire.
KLEM
Baseball umpire Bill
KLEMBill of umpiring fame
KLEMUmpire in the Hall of Fame