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.

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.

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

Monfils upset fourth-seeded Taylor Fritz of the United States 3-6, 7-5, 7-6 (1), 6-4 in the third round at Melbourne, Australia. When Monfils made his Australian Open debut in 2005, Fritz, now 27 years old, was 7.

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 ...

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 ...

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 ...

MELBOURNE, Australia -- Gael Monfils joined Roger Federer as ... Michelsen will try to send another high seed packing when he plays No. 8 Alex de Minaur, an Australian who beat No. 31 Francisco ...

Follow the quarter-finals action live as Madison Keys does battle with Elina Svitolina, Iga Swiatek faces Emma Navarro and Ben Shelton plays Lorenzo Sonego.

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.

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.

Shelton has played at least one tiebreaker in all five of his matches at the Aussie Open and needed three of them to outlast Gael Monfils ... round and No. 8 Alex De Minaur (6-3, 6-2, 6-1).