Katie Boulter had an adorable message for a fellow tennis power couple after they won matches on the same day at the Australian Open. Gael Monfils and Elina Svitolina both upset the No. 4 seeds in the men’s and women’s singles draws in back-to-back matches on Margaret Court Arena.

Round of 16 action at the Australian Open features young American Alex Michelsen against Australia’s hope Alex de Minaur, while the ageless Gael Monfils squares off with Ben Shelton.

Also advancing on the men's side was local hope and No. 8 Alex De Minaur, who dispatched American qualifier Tristan Boyer 6-2, 6-4, 6-3 on Rod Laver Arena. Earlier Thursday, Gael Monfils ...

Follow live text and radio commentary as Alex de Minaur plays Alex Michelsen in the Australian Open fourth round.

Roger Federer won all 17 of his matches against Spain’s David Ferrer while Novak Djokovic has triumphed 20 times over Gael Monfils. Sometimes an opponent is just better than you. Alex de Minaur ...

Gael Monfils expressed extreme confidence on ... Michelsen will next face Alex de Minaur. The eighth-seeded Australian got past No. 31 Francisco Cerundolo of Argentina 5-7, 7-6 (3), 6-3, 6-3.

Defending champion and No. 1 seed Jannik Sinner easily dispatches host country's last hope; Ben Shelton takes on-court interviewers to task.

"I feel that I was better in my prime, for sure," Monfils said. "But with my form now, I have more experience, so I can adjust myself." Photo shows Alex de Minaur screams out as he celebrates ...

Jannik Sinner battled through illness and reached the quarter-finals of the Australian Open on Monday but the physical demands of Grand Slam tennis proved too much for French veteran Gael Monfils and American teenager Learner Tien.

It was a day to remember at the Australian Open, with Learner Tien becoming the youngest to reach the fourth round since Rafael Nadal in 2005 and Gael Monfils ... s Alex de Miñaur achieved ...

de Minaur follows the quarterfinal between Ben ... Sonego will go up against No. 21 Ben Shelton, who advanced when 38-year-old Gael Monfils of France quit because of an injury early in the fourth ...

The future of men’s tennis has been on show at the Australian Open but Gael Monfils struck a major blow for the ... three-time finalist Daniil Medvedev in a late-night clash. Alex de Minaur (pictured) battled from a set down to earn a hard-fought victory ...