Heading into December, the Chiefs’ offense was in a tailspin and coach Andy Reid decided to hand play calling to offensive coordinator Matt Nagy. The results have been impressive.

In the four games before Reid gave up play calling, the Chiefs were 1-3 and had averaged 16 points a game and 300 yards a game. In the four games since Reid gave up play calling, the Chiefs are 3-1 and have averaged 29 points a game and 421 yards a game.

Alex Smith has been a major beneficiary of Nagy’s play calling. In the four games before the switch, Smith had a passer rating of 78.7 and there was talk of the Chiefs benching Smith for Patrick Mahomes. Since the switch, Smith has a passer rating of 105.3, and no one is talking about benching him.