Game Rule Ref Signals

Clipping	Contacting kicker	Illegal crackback	Coin Toss Winner
Chop or cut block	Penalty declined	Delay of game	First Down Awarded
Disqualification	Face mask	Intentional grounding	Forward pass behind the line of scrimmage
Holding	Illegal block	Illegal contact on receiver	Illegal kickoff
Illegal pass	Illegal substitution	Ineligible receiver	No Flag on the Play
Illegal interference	Too many players	No yards	Onside or lateral pass
Objectionable conduct	Offside	Piling	Resetting the 20-second clock
Procedure	Roughing passer	Roughing kicker	Spearing
Safety touch	Single point	Time count violation	Time in
Touchdown	Time out	Tripping	Unnecessary roughness