So, this is how it ends.

Patrick Mahomes was knocked out of the loss that eliminated the Kansas City Chiefs in the waning moments of the game with a wicked left knee injury.

There was no cape for Superman to put on to save the Chiefs Kingdom this time.

Rats. Oh, you know he tried.

But the knee buckled and bent awkwardly. He lay on the turf in apparent anguish as the medical team administered treatment. Teammates went down to one knee. It was a somber scene at Arrowhead Stadium. Mahomes, who has demonstrated repeatedly that he is as great as it gets, is human after all. The Chiefs needed him to spark a last-minute rally for a game-tying field goal or even a winning touchdown, but there was nothing left.