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.
Tien, 19, took out hobbling Frenchman Corentin Moutet 7-6(10) 6-3 6-3 to continue his stunning run on his Melbourne Park debut and become the youngest man to reach the fourth
