The Kansas City Chiefs fought back to beat the San Francisco 49ers 25-22 in overtime and win their third Super Bowl in five years.

The 49ers came into the first Super Bowl held in Las Vegas as the slight favourites and were twice on the brink of victory at Allegiant Stadium.

A last-gasp field goal by the Chiefs made it 19-19 to send the game into overtime, and although the 49ers edged back in front, Patrick Mahomes’ touchdown pass to Mecole Hardman meant defending champions Kansas City cemented their status as the first NFL dynasty since the New England Patriots.

The Chiefs have reached four of the past five Super Bowls and became the first team to win back-to-back titles since the Patriots in the 2003 and 2004 seasons.

At just 28, Mahomes has become the sixth quarterback in NFL history to win three or more Super Bowls, while Andy Reid has become the fifth coach to win three or more.

More to follow.