Australian Open: Learner Tien youngest man in last eight since 2015

MELBOURNE, Australia — Learner Tien is the youngest man to reach the Australian Open quarterfinals in 11 years. He’s the youngest American man to go so far in a Grand Slam event since 2002. And he didn’t have to go the distance again with three-time runner-up Daniil Medvedev to get there. The 20-year-old Tien had