wow that last overturn was huge, can someone explain how that was ruled as an incomplete? I thought he had perfect control of the ball and extended for the TD?
James made that catch as he was going to the ground, so he never actually established possession of the ball before hitting the ground, then, when he hits the ground, the ball hits the ground and pops loose.
Basically, he didn't "complete the catch process." If a caught ball touches the ground, it’s not a catch. The receiver needs to have his hands under it. See: Edelman’s catch in the last Super Bowl.