Ben Shelton (No. 20) will meet Gael Monfils (No. 41) in the Round of 16 at the Australian Open on Sunday, January 19.Monfils enters the Round of 16 after his four-set win on Friday over Taylor

Monfils was struggling with a back injury at the start of the fourth set as Ben Shelton advanced to the quarter-finals

Ben Shelton has shared what Gael Monfils is really like after their Australian Open fourth-round clash. The 38-year-old Frenchman was forced to retire from their match on Monday while trailing by two sets to one. Afterwards, Shelton opened up on a private chat he shared with the former world No. 6.

Gael Monfils joined Roger Federer as the only men to reach the Australian Open's fourth round at age 38 or older since the tournament field expanded to 128 players in 1988, coming back to beat No. 4 seed Taylor Fritz 3-6,

American tennis star Ben Shelton has shown his class after opponent Gael Monfils was forced to retire in the fourth set of their gripping clash at the Australian Open on Monday night. Monfils pulled the pin with 21st seed Shelton leading 7-6 (7-3), 6-7 (3-7), 7-6 (7-2), 1-0 much to the dismay of the crowd.

Gael Monfils rallied from a set down to claim a thrilling 3-6, 7-5, 7-6 (1), 6-4 win over American Taylor Fritz in a third-round match at the Australian Open.

Ben Shelton ground down French veteran Gael Monfils Monday to set up an Australian Open quarter-final against Lorenzo Sonego, who ended teenage qualifier Learner Tien's fairytale run. But again nothing separated them until Shelton ended the resistance of Monfils with a series of winners to take the tiebreak and the veteran retired soon after.