Jan. 20 (UPI) -- Roger Federer's attempt at a record third consecutive Australian Open title fell short Sunday in a shocking upset.
Greece's Stefanos Tsitsipas picked up a surprising victory over third-seeded Federer in the fourth round at Rod Laver Arena in Melbourne. Tsitsipas edged Federer 6-7 (11), 7-6 (3), 7-5, 7-6 (5) in a back-and-forth contest.
The 20-year-old Tsitsipas became the first player from Greece to reach a major quarterfinal. Federer, 37, was the oldest player left in the field, while Tsitsipas was the youngest remaining in the fourth round.
"I lost to a better player who was playing very well [Sunday]," Federer told reporters after the match. "Hung in there, gave himself chances at some point, stayed calm. It's not always easy, especially for younger guys. Credit to him for taking care of that."
Federer's loss makes it four straight Grand Slams without an appearance in the semifinals. He sat out the 2018 French Open and suffered defeats at Wimbledon (quarterfinals) and the U.S. Open (fourth round).
"Roger is a legend of our sport," Tsitsipas said after the match. "So much respect for him. He showed such good tennis over the years. I've been idolizing him since the age of 6."
On the women's side of the tournament, unseeded Anastasia Pavlyuchenkova shocked fifth-seeded Sloane Stephens in three sets.
Stephens had her best Aussie Open in five years, but suffered a 6-7 (3), 6-3, 6-3 loss to Pavlyuchenkova.
Stephens won the 2017 U.S. Open and was the runner-up in the 2018 French Open, but struggled at Melbourne Park in recent years. Until this year, she failed to nab a win in the Australian Open since 2014, which also ended in a loss in the fourth round.
Pavlyuchenkova faces unseeded Danielle Collins in the quarterfinals.