Tien thrashes Medvedev after nosebleed to make maiden Slam quarter-final
The 20-year-old American, who capped a breakout 2025 by winning the ATP Next Gen title, crushed the Russian 6-4, 6-0, 6-3 in just 1hr 42 mins on Margaret Court Arena.
It put 25th seed Tien into a last-eight clash with third-seeded German Alexander Zverev.
He is the youngest men's singles quarter-finalist at Melbourne Park since Nick Kyrgios in 2015 and the youngest American man to reach the last eight at a Slam since Andy Roddick in 2002 at the US Open.
"It feels amazing. I mean, so special to do it...