REF

Tue, 28 Feb '23

Soccer official, informally

Mon, 23 Jan '23

Official with a whistle

Thu, 12 Jan '23

Certain whistle-blower

Fri, 14 Oct '22

Card holder, maybe

Wed, 12 Oct '22

Expert with flags, perhaps

Mon, 3 Oct '22

Whistle blower

Sun, 7 Aug '22

One calling a "T"

Tue, 26 Jul '22

N.B.A. official

Sat, 11 Jun '22

Authority in the field, informally

Sun, 29 May '22

Court figure, informally

Thu, 12 May '22

One who whistles while working?

Wed, 11 May '22

One with a whistle ... who sometimes 1-Across?

Sun, 16 Jan '22

"Zebra"

Mon, 9 Aug '21

One tweeting about football?

Wed, 7 Jul '21

One who whistles while working

Sun, 27 Jun '21

One enforcing traveling rules

Mon, 3 May '21

Official with a whistle

Sat, 27 Mar '21

One making a call

Sun, 21 Mar '21

Target of the heckle "What game are you watching?!"

Wed, 13 Jan '21

Officiate, informally