At 19 years of age, Learner Tien becomes the youngest man to reach the Australian Open fourth round since Rafael Nadal.
World number one Jannik Sinner has now claimed 64 match wins at the majors, which moves him clear of Andreas Seppi (63) for ...
Youngster Learner Tien and veteran Gael Monfils defied their respective ages as both players reached the Australian Open ...