Who won the Super Bowl? Chiefs and 49ers produce overtime thriller in Las Vegas

Kansas City 25-22 San Francisco: Patrick Mahomes and Brock Purdy battled it out at Allegiant Stadium in Las Vegas for the Vince Lombardi trophy

Patrick Mahomes, Travis Kelce and the Kansas City Chiefs are back-to-back Super Bowl champions.

Mahomes threw a three-yard touchdown pass to Mecole Hardman with three seconds left in overtime, and the Chiefs rallied to beat the San Francisco 49ers 25-22 on Sunday in the second overtime game in Super Bowl history, becoming the first repeat champs in the NFL for 19 years and the ninth overall.

With pop star Taylor Swift watching boyfriend Kelce from a suite, the Chiefs captured their third Super Bowl title in five years and firmly established themselves as a dynasty.

The NFL's first Super Bowl in Las Vegas was a sloppy, mistake-filled affair that was mostly boring until the back-and-forth fourth quarter and OT. It was the second of 58 Super Bowls to go to overtime.

The Chiefs trailed 22-19 after Jake Moody kicked a 27-yard field goal on the first possession of overtime, but Mahomes rallied the Chiefs, completing another impressive comeback in a rematch of a Super Bowl four years ago.

Patrick Mahomes of the Kansas City Chiefs throws the game-winning touchdown (Getty Images)

Mahomes ran 8 yards on fourth-and-1 to keep the Chiefs' chances alive and then scrambled 19 yards to set up the winning score.

After he connected with a wide-open Hardman, the Chiefs ran on the field as red-and-yellow confetti fell on the turf.

“The whole game, our entire season, the defence keeping us in there, the offence making plays, then Butker hitting it from like 70, I’m proud of the guys for keeping us believing,” said Mahomes.

“The Kansas City Chiefs are never underdogs, I know that. The whole family in Kansas City is special. I can’t ask for anything better than this. Kansas City, I’ll see you at the parade.”

While Kelce added: “The goal has always been to get three, we couldn’t get there without getting to two.

“Family forever baby, I couldn’t be more proud, we get a chance to do this three times in a row. We’ll party and then get back to it.”

And Hardman, after catching the winning touchdown, concluded: “It feels great, I blacked out when I caught the ball. It feels awesome.”

Mecole Hardman Jr. of the Kansas City Chiefs celebrates (Getty Images)

AP contributed to this report