World number two Carlos Alcaraz raced into the quarter-finals of the BNP Paribas Open with a straight-sets win over Fabian Marozsan in Indian Wells.

The Spaniard, bidding to become the first player to defend the title since Novak Djokovic in 2016, won 6-3 6-3 in an hour and a quarter.

Hungarian Marozsan, 24, came into the match with a rare winning head-to-head record against Alcaraz, having beaten him on the Rome clay last year in their only previous meeting, one of the shock results of the season.

The Wimbledon champion quickly went about taking his revenge, winning four games in a row from 3-2 down to take the first set.

A solitary break for 4-2 in the second proved enough to wrap up the match and book a last-eight meeting with Alexander Zverev.

"Honestly I was nervous before the match, playing against someone who beat you, let's say easily, it was difficult for me to approach the game," Alcaraz said in his on-court interview.

"But I'm happy with the win. Today I knew better what I needed to do than in Rome."

Zverev took down Australian Alex de Minaur after he lost the first set before coming back to win 5-7 6-2 6-3.

Australian Open champion Jannik Sinner continued his stellar start to the year, recording his 18th straight win in a victory over American Ben Shelton 7-6 (4) 6-1.

Stefanos Tsitsipas, the 11th seed from Greece, was on the end of an upset as he slipped to a 6-2 6-4 defeat to Czech youngster Jiri Lehecka.