Zipper Action into Helpside Ball Screen Options

Celtics' Coach Brad Stevens acclimated quickly to the NBA game. This video (and diagrams) show simple zipper action into a pair of ball screens - the second with multiple options available. 

Ball side zipper action evolves into middle ball screen and opposite side pick and roll. With the recent Olympics, it reminds me of the pommel horse, where athletes have to migrate to each segment of the equipment. It's an innovative way to get Thomas and Johnson into a ball screen with options for perimeter shots on ball reversal.