In-form Alex de Minaur wins again at Miami Open

Alex de Minaur's impressive start to 2024 goes on, Australia's men's No.1 racking up his 19th singles win of the season to set up a Miami Open round-of-16 showdown with Hungarian hitman Fabian Marozsan.

The ninth-seeded de Minaur got the better of Germany's Jan-Lennard Struff 7-6 (7-3) 6-4 in windy conditions on Monday, facing just one break point despite making only 48 per cent of his first serves.

He remains one win ahead this year of fellow top-10 players Jannik Sinner and Casper Ruud, who both play on Tuesday.

After holding his nerve, and serve, through five deuces to take a 5-3 lead in the second set, he coolly closed out the win after one hour, 49 minutes.

"It wasn't going to be easy. It's super-tough conditions," de Minaur said.

"I just tried to keep my head and keep composure. I was able to get a little bit lucky in big points today."

He will next face Marozsan, who followed up his shock defeat of world No.7 Holger Rune in the round of 64 by knocking out Australia's Alexei Popyrin in straight sets on Monday 7-5 6-3.

The Hungarian beat de Minaur last year at the Shanghai Masters, and the world No.10 is expecting another tough battle in Miami.

"He got me last time, so I know exactly what to expect," de Minaur said.

"He's a hell of a player, he's playing great and he's super-dangerous."

German fourth seed Alexander Zverev showed his quality as he escaped a tight first set en route to a 7-6 (7-4) 6-3 win over Christopher Eubanks.

"It was a difficult match. He was in control of it throughout the first set," said the former Miami finalist.

"I was just hanging on and sometimes that is just what you need to do."

Zverev will next face 15th seed Karen Khachanov, who converted his fifth match point for a 6-1 5-7 7-6 (7-5) win over Argentine 20th seed Francisco Cerundolo.

Top seed Carlos Alcaraz dominated Gael Monfils 6-2 6-4 to set up a last-16 clash with Italy's Lorenzo Musetti, who beat Ben Shelton 6-4 7-6 (7-5).

Alcaraz, on a quest to capture the 'sunshine double' after his triumph at Indian Wells, was never really threatened in a match-up of two of the game's most entertaining players.

"He's a great athlete. He reaches almost every ball," Alcaraz, the 2022 winner in Miami, said of 37-year-old Frenchman Monfils.

Sydneysider Chris O'Connell will also be in round-of-16 action on Wednesday (AEDT), when he faces the challenge of Australian Open champion and No.2 seed Jannik Sinner.

Australian Associated Press