Learner Tien, a 19-year-old American qualifier, caused a major upset at the Australian Open by defeating Daniil Medvedev. After a grueling five-set match, Tien enjoyed a celebratory pizza. This ...
Learner Tien upset a fifth-seeded, racket-tossing Daniil Medvedev in the second round of the Australian Open, a five-setter that took nearly five hours.