Auger-Aliassime outlasts Norrie to reach quarter-finals at Vienna Open

Felix Auger-Aliassime advanced to the quarter-finals at the Vienna Open after battling through three sets to defeat Great Britain's Cameron Norrie on Thursday.

The 21-year-old from Montreal bounced the 2021 Indian Wells champion in a taxing 2-6, 7-6 (6), 6-4 victory.

Norrie blazed ahead to take the first set, but was met with feisty competition in the second. Though Auger-Aliassime was down 3-6 in the tiebreak, he fought back and saved three match points before storming ahead to take both the second and third sets.

He'll next face second-seeded Alexander Zverev of Germany in the quarter-finals.

Zverev defeated Alex De Minaur 6-2, 3-6, 6-2 for the German's 300th career win.

"This is definitely a massive milestone for me," he said.

The Canadian is also playing in the quarter-finals of the doubles tournament. With German partner Andreas Mies, he takes on the duo of Great Britain's Joe Salisbury and American Rajeev Ram later Thursday.

WATCH | Auger-Aliassime defeats Norrie in Austria:

Meanwhile, American qualifier Frances Tiafoe rallied to beat Stefanos Tsitsipas for his second win in four months over the top-seeded Greek.

Tiafoe upset Tsitsipas in straight sets in the opening round at Wimbledon in June, but failed to win a set when the pair met again at the Tokyo Olympics the following month.

However, the 49th-ranked American proved his triumph at the All England Club was no fluke, as he battled back from 3-0 down in the final set to win six of the next seven games.

Thursday's win was Tiafoe's first in seven matches against a top-three player, as Tsitsipas reached his career-high No. 3 ranking in August.

The result denied Tsitsipas a tour-leading 15th quarter-final of the season.

In his fourth quarter-final of the year, Tiafoe will take on Diego Schwartzman, who outlasted Gael Monfils 7-6 (5), 4-6, 6-2.