It’s inevitable that some odd things will happen during a football game played in below-freezing weather, and Saturday’s wild-card game in Kansas City was no exception.

The game included many unusual occurrences, starting with the fourth-coldest kickoff temperature in NFL history at minus-4 degrees. The third-quarter hit on the Chiefs quarterback, Patrick Mahomes, caused his helmet to shatter partially, and Andy Reid’s mustache to grow icicles. The water promptly froze.

Mahomes chose to run on a second-and-7 play from Miami’s 16-yard line as he was unable to find an open receiver. The Chiefs quarterback managed to get approximately 12 yards before Dolphins safety DeShon Elliott hit him at the 3-yard line.

Elliott’s helmet made contact with Mahomes’ helmet, which caused a chunk of Mahomes helmet to break off.

At that point, the officials probably should have stopped the game so Mahomes could get a new helmet, but instead, they let the Chiefs run another play, and as you can see below, Mahomes was missing a solid chunk of his helmet on the play.

The helmet almost certainly shattered due to the frigid temperatures.

Mahomes told reporters postgame that he didn’t realize his helmet was broken until teammates told him, and that he wanted to stay in the game even with a cracked helmet.

“I didn’t know what happened in the moment but I got in the huddle and everyone was telling me, but I was like, ‘I got y’all, but I’m not coming out of the game, so we can figure it out on the sideline,'” Mahomes said. “It was a first for me.”

The aftermath of the play was slightly confusing, because not only was the Chiefs QB allowed to stay on the field, but there was no flag for helmet-to-helmet contact (it could have been thrown on Elliott or even Mahomes for initiating contact) and Mahomes wasn’t forced to leave the game to be checked for a concussion. As NBC rules analyst Terry McAuley noted, at the minimum, Mahomes should have been forced to leave the game for at least one play to get a new helmet.

The Chiefs ended up getting a Harrison Butker field goal on the drive to push their lead to 19-7. If you want the latest updates from the battle between the Chiefs and Dolphins, be sure to check out our live blog by clicking here.