Whistle for a sub?

[Rufus]

Using the whistle for subs will depend on whether or not it's necessary (like in transition, for instance). Most of the times on crews I've worked with either T or C will hold their hand up and beckon the sub(s) in. We pre-game to make eye contact before we inbound the ball so we don't get caught unaware during these situations.

We use two-hand reporting for fouls and that was a switch for me when I started back officiating a couple of years ago. When first getting started officiating it was drilled into my head to (1) always use one hand and (2) to make sure it's off to the side and not in front of your face. It's stupid but going to two hands to report numbers required more than a little practice and the first year doing it I sometimes resorted to getting the numbers "ready" when walking to report the foul.