Qualifier Cristian Garin of Chile shocked third-seeded Casper Ruud of Norway 6-4 7-6 (7-2) at the Indian Wells Masters for his first win over a top-five player in nearly two years.

Garin, ranked No.97, had 39 winners while Ruud, ranked No.4, managed just 15 winners against 29 unforced errors in a match that lasted one hour 59 minutes.

"Casper is one of the players that I really admire," Garin said.

"I'm so happy to be playing like that, being aggressive, going to the net. That's the way that I like to play and the only way that I have to beat these kinds of players."

The 26-year-old Garin improved to 3-1 lifetime against Ruud, a two-time grand slam finalist, since they first met on tour in 2019 at Sao Paulo, Brazil.

Garin moves into the round of 16 to face No. 23 seed Alejandro Davidovich Fokina, who beat 13th-seeded Karen Khachanov 6-3 1-6 6-4.

Cameron Norrie, the 2021 Indian Wells champion, rallied from a set and 3-0 down to defeat world No. 103 Taro Daniel 6-7 (7-5) 7-5 6-2.

The 10th-seeded Norrie improved to 11-3 lifetime at Indian Wells and will face sixth-seeded Andrey Rublev, who beat Ugo Humbert 7-5 6-3.

Daniel, a qualifier, was seeking another eye-opening victory following his second-round stunner over Matteo Berrettini.

Germany's Alexander Zverev, who missed the second half of the 2022 season after tearing three ligaments in his right ankle at the French Open, beat Finland's Emil Ruusuvuori 7-5 1-6 7-5.

"To be honest I thought he played much better than me throughout the match," Zverev said.

"That's just the way it is sometimes. This is tennis, one or two points can decide a match and I'm happy that I won those points."

He moves on to face fifth-seeded Daniil Medvedev, who defeated Ilya Ivashka 6-2 3-6 6-1.

Medvedev looked like he would make quick work of Ivashka after a one-sided first set but ran into trouble in the second where he grew agitated with some noisy fans on a windy night on centre court.

In a disappointing day for the Australians, Jason Kubler went down 6-3 6-2 against 14th seed Frances Tiafoe, and Jordan Thompson could not follow up his incredible upset against Tsitsipas, falling 6-3 7-6 (8-6) to Chile's Alejandro Tabilo.

- with Reuters and DPA