3.7 A player may not perform a Tap in replacement of a Rollball.
Ruling = The offending Team must return to the Mark and perform the Rollball.
13.8 An attacking player, other than the player performing the Rollball, may receive 
the ball at the Rollball and shall do so without delay. That player is referred to as 
the Half.
13.9 The Half may control the ball with a foot prior to