Kansas City Chiefs win Super Bowl, defeat 49ers 31-20

The comeback Chiefs did it again and are Super Bowl champions.

Patrick Mahomes threw for a pair of touchdowns in the game's final 6:13, helping the Kansas City Chiefs erase a 10-point deficit and beat the San Francisco 49ers 31-20 in Super Bowl 54.

The go-ahead score: A 5-yard touchdown pass to Damien Williams with 2:44 left. Williams is a former Miami Dolphins running back and returned to his former field - Hard Rock Stadium - to enjoy the most significant night of his career.

Williams finished off the title march with a touchdown run with 1:12 left, a 38-yarder around the left end to seal the outcome.