Greece's Stefanos Tsitsipas recovered from two sets down to stun Rafael Nadal in the Australian Open quarter-finals on Wednesday, ending the Spaniard's bid for a record 21st Grand Slam title.
Second seed Nadal was on course for a comfortable victory before Tsitsipas turned the match around to prevail 3-6, 2-6, 7-6 (7/4), 6-4, 7-5 in a seismic upset."I don't know what happened after the third set -- I fly like little bird, everything was working for me," said Tsitsipas, who hit 49 winners and 17 aces.
Fifth seed Tsitsipas will now attempt to reach a maiden Grand Slam final when he plays the in-form Daniil Medvedev in the semi-final.
The fourth seed had more firepower than his younger, eighth-seeded rival in scorching conditions on Rod Laver Arena, grinding him down 7-5, 6-3, 6-2 to extend his win-streak to 19 matches.
Ashleigh Barty had raised expectations of ending Australia's 43-year wait for a home winner but her campaign was ended by Czech surprise package Karolina Muchova, who stunned the top seed 1-6, 6-3, 6-2.
Muchova will face Jennifer Brady in the last four after the 22nd seed beat her fellow American and close friend Jessica Pegula 4-6, 6-2, 6-1.