Answer: ref

AnswerCrossword Clue
REFSport authority
REFRing figure
REFLord of the ring
REFNFL "zebra"
REFRing official
REFArbiter, for short
REFUmp's gridiron counterpart
REFGridiron arbiter
REFWhistle-blower
REFArbiter
REFCourt arbiter
REFOfficial whose eyesight is often called into question
REFZebra on a field
REFZebra with a whistle
REFGridiron zebra
REF"Zebra" on the field
REFUmp's relative
REFWhistle-blower, say
REFBk. used for look-ups
REFFight stopper, perhaps
refto referee (to supervise the play in certain sports)
REFUmp's kin?
REF"Zebra," in football slang
REFNHL OFF.
REFTD caller
REFTKO caller
REFZebra, in sports?
REFCourt caller
REFHe's in the midst of a fight
REFRink official
REFThird man in the ring
REFFoul caller
REFOne who cries foul?
REFUmp
REFUmp's colleague
REFUmp's kin
REFUmp's relation
REFUmpire's counterpart
REFUmp's cousin
REFCourt whistler