VIDEO: Wizards' Wall chases down Thomas for highlight-reel swat

Watch your back, Isaiah Thomas.

Too late.

John Wall of the Washington Wizards never takes a play off, as Thomas found out for himself Friday night. Wall accelerated up the hardwood at TD Garden like the Roadrunner to come from behind and unleash a vicious block on the Boston Celtics' leading scorer.

Wall is averaging 2.3 rejections through the first four games of the 2015-16 regular season. Not bad for a 6-foot-4 point guard.