The Kansas City Chiefs must feel comfortable with their backs against the wall.

Trailing by double digits for their third playoff game in a row — becoming the first team in NFL history to do that and go 3-0 — the Chiefs outscored the San Francisco 49’ers 21-0 in the last 6:13 of Super Bowl LIV to win 31-20 and claim the club’s first NFL title in 50 years.

It was Kansas City head coach Andy Reid’s 222nd career NFL victory, shedding the title of the league’s winningest coach without a ring.

Game MVP quarterback Patrick Mahomes, who had thrown two interceptions earlier in the game, and the Chiefs defense got the ball trailing 20-10 with 8:33 remaining, and responded with a 10-play, 83-yard drive and hit Travis Kelce on a 1-yard touchdown pass. The defense forced a San Francisco three-and-out, and the Chiefs retook the lead 2:20 later when Mahomes hit Damien Williams on a swing route and the running back snuck the ball by the pilon.

The 49ers got the ball back down 24-20 with 2:39 left, but there would be no epic comeback drive for quarterback Jimmy Garoppolo and team. Frank Clark’s fourth-down sack all but sealed the win, and with Kansas City running out the clock, they did one better when Williams took a toss and scampered 38 yards to paydirt to ignite a celebration — and Reid’s dousing with orange Gatorade.

Mahomes is the Super Bowl’s youngest MVP.