Traveling violation or not NBA referee Zach Zarba's take on The James Harden Step Back.

Lebron James gets MVP chants from Houston crowd

James Harden Unstoppable s at Pelican 2015-03-25

Zach Collins With A Brutal Foul On GG Jackson Spurs Had An Unsuccessful Challenge

Side-by-side view of James Harden's regular stepback three-pointer and Stephen Curry's failed imitation attempt