America’s Sofia Kenin stunned two-time Major champion Garbine Muguruza to win the Australian Open on Saturday, completing a surprise run where she has come from nowhere to win her first Grand Slam title. Despite making her debut in a Major final Kenin, 21, showed all her trademark aggression as she fought back from a set down to win 4-6, 6-2, 6-2 in 2hrs 3mins against the shellshocked Spaniard.

The 14th seed, who will now jump as high as seventh in the world and usurp Serena Williams as America’s number one, was in tears at the end and headed straight for her father Alexander, who is her coach.

It was the final twist in a tournament of upsets, after Williams went out in the third round and Kenin upset Australia’s world number one Ashleigh Barty in the semi-finals.

Spain’s Muguruza, 26, was unseeded for the first time at a Slam since 2014 having suffered a marked loss of form in the last 18 months.