Daniil Medvedev praised his Australian Open first round opponent Kasidit Samrej after being stretched to five sets by the 418th-ranked Thai wildcard before winning 6-2 4-6 3-6 6-1 6-2 on Tuesday.

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 19-year-old from Irvine, California nearly lost a two-set lead from match point up but held off a late surge from a former world No. 1 to win the biggest match of his career.

American teenager Learner Tien produced arguably the biggest shock of the Australian Open so far as he defeated last year’s runner-up Daniil Medvedev in five sets, 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (7).

Daniil Medvedev used his racket to smash a tiny camera attached to the net at the Australian Open while he was trailing someone ranked 418th before eventually avoiding a monumental upset and winning 6-2, 4-6, 3-6, 6-1, 6-2 in the first round at Rod Laver ...

The 19-year-old who was a late qualifier to the Grand Slam secured the biggest win of his young career on Thursday

Daniil Medvedev’s “Dead Fish” celebration at the end of the 2021 U.S. Open final stands out as among the most unusual and unexpected reactions to a major tennis championship

The outcome was eyebrow-raising because of the wide gulf in experience and accomplishments between the two players at Margaret Court Arena.

The Russian champion - who reached three finals at Melbourne Park - played a really fluctuating match against 19-year-old American Tien, surrendering in the fifth set after he had turned the inertia of the challenge thanks to the physical decline of his opponent.

Built looks to build on his Kentucky Derby credentials Saturday in New Orleans; two of December's heros return to Group 1 action in Hong Kong.

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,