How to handle... two 'missiles' collide?

[Adam]

Originally Posted by ca_rumperee

Call something, stop play.
Stop play for the sake of stopping play, got to possession arrow.
Let play continue, check for advantage, stop as soon as prudent.

or, some other approach.

Two things.
1. Advantage is irrelevant if both players had equal opportunity to reach the ball.
2. Only go to possession arrow if there is no team control (such as a throwin or rebound situation). If team control exists, give it back to that team.