Learner Tien, a 19-year-old qualifier from California, became the youngest American man to reach the Australian Open's third round since Pete Sampras in 1990, upsetting a racket-tossing Daniil Medvedev 6-3,

While Medvedev escaped a fine for the media no-show, the Russian has now been slugged with $122,000 worth of fines for separate outbursts in the tournament. The Russian World No.5 copped a $16,000 fine for breaking a net camera after smashing his racquet into the net during his first-round win.