The 19-year-old from Irvine, California nearly lost a two-set lead from match point up but held off a late surge from a former world No. 1 to win the biggest match of his career.
Corentin Moutet (No. 69 ranking) will face Learner Tien (No. 121) in the Round of 32 of the Australian Open on Friday, ...
The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed ...