Learner Tien pulled off a massive upset against Daniil Medvedev at the Australian Open. So, who is Tien, the 19-year-old out of California?

The Irvine native and 19-year-old qualifier, who played one semester at USC, wins a 4-hour, 49-minute thriller that ends at nearly 3 a.m. in Melbourne

Three-time losing finalist Daniil Medvedev and home favourite Alex de Minaur set out on the road to Australian Open glory Tuesday while Jasmine Paolini headlines the women's action. De Minaur, nicknamed "The Demon" by the Australian fans and media,

American teen Learner Tien pulled off the biggest upset so far at the 2025 Australian Open, ousting Russian Daniil Medvedev -- the No. 5 player in the world -- in a 4-hour, 49-minute thriller at Margaret Court Arena.

Daniil Medvedev earns code violation for racket abuse before rallying past wild card entrant; Taylor Fritz carries U.S. banner forward.

Last year's runner-up Daniil Medvedev smashed his racquet and avoided a huge shock at the Australian Open on Tuesday before joining a rampant Taylor Fritz and veteran Gael Monfils in

On day three in Melbourne, two Americans turned Rod Laver Arena into a nervous wreck, a 17- and 38-year-old stole the show, and Daniil Medvedev ... NCAA champions Emma Navarro and Peyton Stearns ...

Three-time Australian Open finalist Daniil Medvedev smashed his racket ... Holger Rune was pushed all the way to five sets and Emma Navarro also had a tough time in one of three all-American ...

American Learner Tien upset No. 5 seeded Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7) at the 2025 Australian Open, in a 4-hour, 49-minute match that began Thursday night and ended early Frid

Three-times Australian Open finalist Daniil Medvedev allowed his frustrations to boil over in a Melbourne Park meltdown before advancing to the second round on Tuesday while Taylor Fritz made a strong start in his bid to end a 22-year Grand Slam drought for American men.

Men's 4th seed Taylor Fritz was among the winners, as was Daniil Medvedev, Emma Navarro, and Elena Rybakina. Catch up on how the day unfolded here.

Brazilian teenager Joao Fonseca stunned ninth seed Andrey Rublev in a major Australian Open shock on Tuesday as racquet-smashing 2024 finalist Daniil Medvedev narrowly avoided the same fate.