20岁的Tien学生通过击败Daniil Medvedov(Daniil Medvedev)进入澳大利亚公开四分之一决赛, 成为自安迪·罗德迪克(Andy Roddick)以来在Grand Slam四分之一决赛中最年轻的美国男子。 Twenty-year-old Learner Tien reached the Australian Open quarterfinals by defeating Daniil Medvedev, becoming the youngest American man in a Grand Slam quarterfinal since Andy Roddick.

2026年1月25日, 二十岁的美国学生Tien进入澳大利亚公开四分之一决赛, 自2015年尼克·基里戈斯(Nick Kyrgios)和2002年安迪·罗德克(Andy Roddick)以来, Twenty-year-old American Learner Tien reached the Australian Open quarterfinals on January 25, 2026, becoming the youngest man to do so since Nick Kyrgios in 2015 and the youngest American man in a Grand Slam quarterfinal since Andy Roddick in 2002. 他在第四回合击败了Daniil Medvedev 6-4、6-0、6-3, He defeated Daniil Medvedev 6-4, 6-0, 6-3 in the fourth round, overcoming a nosebleed that paused play for seven minutes. Tien曾在2025年美国公开赛上击败梅德韦杰夫, 将在四分之一决赛上面对为决赛决赛冠军Alexander Zverev辩护。 Tien, who previously beat Medvedev at the 2025 U.S. Open, will face defending finalist Alexander Zverev in the quarterfinals.