INDIANAPOLIS – Every Sunday on Blue Zone Chris Hagan asks the Colts a burning question. This week, Chris asked the players how well they know the referee’s signals on penalty calls.

Steve Olson signals with his right hand during the Hermantown at Duluth Denfeld girls basketball game on Friday, Dec. 20. Olson has served as a high school referee for 50 years. Dan Williamson ...

Basketball - factfile Basketball scoring, rules and officials. ... To ensure that everybody is aware of a decision made, the referees perform a series of hand and arm signals.