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?

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

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.

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,

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 ...

MELBOURNE, Jan 14 (Reuters) - Three-times Australian Open finalist Daniil Medvedev allowed his frustrations ... Danish 13th seed Holger Rune was pushed all the way to five sets and Emma Navarro also had a tough time in one of three all-American ties ...

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

Russian Andrey Rublev, seeded ninth, was upset by qualifier Joao Fonseca, an 18-year-old from Brazil. He stormed into his Grand Slam main draw debut, stunning Rublev 7-6 (1), 6-3, 7-6 (5) in two hours and 23 minutes.

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 ...

Last year's runner-up Daniil Medvedev destroyed his racquet and ... Rybakina were both emphatic winners on day three, with Emma Navarro and Emma Raducanu also victorious. The feisty Medvedev ...

Jannik Sinner had a notable gesture when he welcomed Darren Cahill's father at his final training session before the Australian Open semifinals in a classy move featured in a new Daily Dose of Social Media.

Defending champion Jannik Sinner raced into the Australian Open semi-finals on Wednesday in imperious fashion after Iga Swiatek was equally ruthless to close on a first Melbourne crown.