American Learner Tien kept the teenage revolution going at the Australian Open by reaching the last 16 on Saturday after 38-year-old Gael Monfils had made a statement for the older player with a stunning upset of fourth seed Taylor Fritz.

Gael Monfils shocks Taylor Fritz to reach last 16 at Australian Open - The 38-year-old defeated a top-five player at a grand slam for the first time since 2008.

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,