Pat Mahomes remains in concussion protocol ahead of AFC title game

Kansas City built a defence and signed a backup quarterback that were good enough to preserve a win.

Now, is the team good enough to win on their own?

Kansas City,which lost Patrick Mahomes to a concussion in the third quarter of Sunday's divisional-round win over Cleveland, might have to find out with their hopes of back-to-back AFC titles and a Super Bowl repeat on the line.

Mahomes remained in the league's concussion protocol Monday and coach Andy Reid declined to speculate on when he'll be cleared.

"Because of the protocol it's a no-brainer," Reid explained of the decision, which rests not in his hands but those of team doctors and outside experts. "You don't even have to think about it. You just go forward. You have an answer if he's there and if he's not there. I can't tell you an answer from a medical standpoint. I just don't know."

If Mahomes is unable to play, 35-year-old journeyman Chad Henne would start against Buffalo in Sunday's AFC title game.

Henne took over when Mahomes sustained the concussion with Kansas leading 19-10, and he finished the drive by leading the team to a field goal. But more memorable will be the two plays he made in the fourth quarter, when Kansas City was trying to hold onto a 22-17 lead and run out the clock on the win.

On third-and-14 in his own territory, Henne scrambled to his left and found some open space, then sacrificed his body by diving for the first-down marker. Henne came up just short, and when Reid elected to go for it rather than punt, the coach put the game in his hands by calling a short pass play to Tyreek Hill that gave Kansas City a first down.

Defence steps up

"I thought Chad played with great composure, particularly for that situation," Reid said, "and to come down to that last series, that big run was gravy. He dusted off those old legs, got them moving a bit, came up a hair short, came back and made a nice throw to Tyreek to clinch it."

That throw wouldn't have been possible without a big stand by the Kansas City defence.

After allowing the Browns to convert their own fourth down with 5:30 to go, they stuffed Nick Chubb and forced Baker Mayfield to throw an incompletion. And when they tackled Kareem Hunt for a loss on the ensuing third-down pass play, the Browns were forced to punt with 4:23 left in the game.

They never got another chance with the ball.

"They have trust in each other to get that done," Reid said. "I'd rather not have it have to be that way, bigger leads, but the bottom line is you attempt to win the football game, and you do it the best way you can against the best competition in this league.

"At times you have to reach down, reach a little deeper, and really, whatever the term is, to get in there and use that intestinal fortitude to get you over the hump."

Mahomes wasn't the only player to sustain a concussion Sunday. Top cornerback Bashaud Breeland left the game in the second half, and with backup Rashad Fenton out with an ankle injury, Kansas City's depth is limited in the defensive backfield.