It is an illustration of a whistle. Basketball Referees Officials Hand Signals Illustrations A set of stickman pictogram representing a set of basketball referee hand signals for the basketball game.

The main officials include one referee and one umpire. The court is divided between them and they swap places after each foul involving a free throw penalty. And also after each jump ball decision.

In a game of basketball there are three clear ways ... the referees perform a series of hand and arm signals.

Being born without hearing hasn't slowed down Cross Creek's Alexis Simmons one bit, as she's lettered in four sports during her high school career.