World number one Carlos Alcaraz cruised into the last 16 of the Miami Open with victory over Dusan Lajovic.
The Spanish defending champion, 19, won 6-0 7-6 (7-5) to set up a meeting with American Tommy Paul.
Alcaraz, who has won 16 of 17 matches this year and has not dropped a set in his past two tournaments, needs to win the title to stay top of the rankings.
Norwegian third seed Casper Ruud is out after a 3-6 6-4 6-4 defeat by Dutchman Botic van de Zandschulp.
After a number of upsets on Saturday, there were straightforward wins for men's seeds Andrey Rublev, Holger Rune and Taylor Fritz.
The Spanish defending champion, 19, won 6-0 7-6 (7-5) to set up a meeting with American Tommy Paul.
Alcaraz, who has won 16 of 17 matches this year and has not dropped a set in his past two tournaments, needs to win the title to stay top of the rankings.
Norwegian third seed Casper Ruud is out after a 3-6 6-4 6-4 defeat by Dutchman Botic van de Zandschulp.
After a number of upsets on Saturday, there were straightforward wins for men's seeds Andrey Rublev, Holger Rune and Taylor Fritz.