It's hardly one bad play. Even if that one play was atrociously bad.
He doesn't break out of ANY contact, needs a giant hole or tons of space to break away a run and in a game where the gameplan was clearly to throw him the ball in the flats with space, he was either dropping the ball or stumbling all over himself.
It's been said many times but his early success was not even remotely sustainable. He was incredibly lucky to start the season as the starter rather than being a late cut and was even luckier to play his first game against the Argos, who have a terrible defense and a ton of those yards came in the fourth with a comfortable lead.