Australian Open: 19-year-old Michelsen upsets Lehecka

American Alex Michelsen advanced to the third round of the Australian Open by edging out No 32 seed Jiri Lehecka 4-6, 6-3, 6-4, 6-4 at Melbourne Park on Thursday.

Michelsen, ranked No 91, will face the winner of the match between German Alexander Zverev, the No 6 seed, and Slovak qualifier Lukas Klein next.

The 19-year-old American won against Australian wildcard James McCabe (7-6 (5), 3-6, 6-1, 6-2) in the previous round.

In the previous round, Lehecka, ranked No 23, defeated Spaniard Bernabe Zapata Miralles (6-3, 6-2, 6-3).

Melbourne (Grand Slam), other second-round results (Melbourne Park, hard, USD 58.910.000, most recent results first):

• Emil Ruusuvuori vs. Daniil Medvedev
• Holger Rune vs. Arthur Cazaux
• Sumit Nagal vs. Juncheng Shang
• Felix Auger-Aliassime vs. Hugo Grenier
• Nuno Borges vs. Alejandro Davidovich Fokina
• Grigor Dimitrov vs. Thanasi Kokkinakis
• Jakub Mensik vs. Hubert Hurkacz
• Ugo Humbert vs. Zhizhen Zhang
• Arthur Fils vs. Tallon Griekspoor
• Lorenzo Sonego vs. Carlos Alcaraz: thursday
• Miomir Kecmanovic vs. Jan-Lennard Struff: thursday
• Tommy Paul vs. Jack Draper: thursday
• Max Purcell vs. Casper Ruud: thursday
• Cameron Norrie vs. Giulio Zeppieri: thursday
• Alexander Zverev vs. Lukas Klein: thursday
• Novak Djokovic (1) beat Alexei Popyrin: 6-3, 4-6, 7-6 (4), 6-3
• Andrey Rublev (5) beat Christopher Eubanks: 6-4, 6-4, 6-4
• Sebastian Korda (29) beat Quentin Halys: 6-4, 6-4, 6-4
• Stefanos Tsitsipas (7) beat Jordan Thompson: 4-6, 7-6 (6), 6-2, 7-6 (4)
• Tomas Martin Etcheverry (30) beat Gael Monfils: 6-4, 6-4, 6-4
• Tomas Machac beat Frances Tiafoe (17): 6-4, 6-4, 7-6 (5)
• Adrian Mannarino (20) beat Jaume Munar: 6-3, 6-3, 1-6, 2-6, 6-3
• Ben Shelton (16) beat Christopher O’Connell: 6-4, 6-1, 3-6, 7-6 (5)
• Fabian Marozsan beat Francisco Cerundolo (22): 7-6 (5), 6-4, 6-2
• Taylor Fritz (12) beat Hugo Gaston (LL): 6-0, 6-3, 6-1
• Karen Khachanov (15) beat Aleksandar Kovacevic (Q): 6-4, 6-3, 4-6, 6-3
• Luca Van Assche beat Lorenzo Musetti (25): 6-3, 3-6, 6-7 (5), 6-3, 6-0
• Flavio Cobolli (Q) beat Pavel Kotov: 7-5, 6-3, 5-7, 6-2
• Sebastian Baez (26) beat Daniel Elahi Galan: 7-5, 2-6, 6-2, 6-4
• Alex De Minaur (10) beat Matteo Arnaldi: 6-3, 6-0, 6-3
• Jannik Sinner (4) beat Jesper De Jong (Q): 6-2, 6-2, 6-2