Sofia Kenin came from a set down to edge a thrilling Australian Open final against Garbine Muguruza and clinch her first Grand Slam title.
The 21-year-old was punished for struggling to find consistency on her serve in the first set as Muguruza came galloping out of the blocks to take the first set.
But the 14th seed showed the same courage as she did in her semi-final against Ash Barty to force a deciding set.
Having taken the break in the sixth game, Kenin looked unstoppable and completely unflappable out on court as she stormed to a 4-6, 6-2, 6-3 triumph at the Rod Laver Arena in two hours and 10 minutes of play.
Kenin becomes the youngest Australian Open winner since Maria Sharapova in 2008 as she secures her first Major title.
By reaching the final, Kenin became the first American other than the Williams sisters to reach the Australian Open final since Lindsay Davenport achieved the feat in 2005.
Muguruza meanwhile had won six of the seven finals she has appeared in - only losing in the 2015 Wimbledon final to Serena Williams - and had the clear advantage in terms of experience as she prepared for a fourth Grand Slam final.
Whatever transpired on court at the Rod Laver Arena, a new name would be etched into the Daphne Akhurst Memorial Cup.
And based on the early proceedings, it was going to be a long while until we knew which player it was as both players showed their willingness to stay in long rallies and wait patiently for their chance to strike.
On her third break point, Kenin struck wide to hand Muguruza crucial advantage in the third game and the Spaniard kept her nose in front to seal the first set 6-4.
But Kenin showed her mettle and true strength, psyching herself up in between points to get on the comeback trail.
And the American found the answer in the fourth game of the second set, breaking Muguruza after staying patient in the long rallies and waiting for the Spaniard to make an error.
She wasted no time in forcing the deciding set, wrapping up the second with a double break and looked to carry the momentum through to the decider.
Muguruza was forced to regroup because her stock was tumbling and tumbling fast. The key moment came in the fifth game when Kenin, from 0-40 down, rallied to win five points and hold, before breaking Muguruza in the very next game.
All of a sudden, the match was moving quickly out of sight for Muguruza, who looked the more nervy of the two players. And on championship point, the 26-year-old produced a horrendous double fault, prompting Kenin to collapse to the floor in tears and process the fact she was the new champion.
