Preator made a good play on the ball and the WR backed into Preator at an angle because the ball was thrown poorly. IOW, Preator had but nothing but air in between him and the ball and he moved toward the ball. The WR was to his right and a half diagonal step closer to the QB but out of the path of the ball. Then the WR adjusted and put himself in the path of Preator who was making a legit play on the ball.