US Open: De Minaur makes last 16

Australian Alex De Minaur, the No 8 seed, moved into the last 16 of the US Open when German Daniel Altmaier retired on Saturday evening at the USTA Billie Jean King National Tennis Center in New York.

De Minaur, ranked No 8, led 6-7 (7), 6-3, 6-4, 2-0 when Altmaier, ranked No 56, pulled out at the USTA Billie Jean King National Tennis Center in New York on Saturday evening.

Altmaier had been playing for over 10 hours in his previous matches and required two medical timeouts to treat a thigh strain during the match against de Minaur.

The Australian will face Swiss qualifier Leandro Riedi next.

New York (Grand Slam), other third-round results (USTA Billie Jean King National Tennis Center, hard, USD 90.000.000, most recent results first):

• Alexander Bublik vs. Tommy Paul
• Alexander Zverev vs. Felix Auger-Aliassime: saturday
• Leandro Riedi beat Kamil Majchrzak: 5-3 ret.
• Andrey Rublev (15) beat Chak Lam Coleman Wong (Q): 2-6, 6-4, 6-3, 4-6, 6-3
• Jannik Sinner (1) beat Denis Shapovalov (27): 5-7, 6-4, 6-3, 6-3
• Jaume Munar beat Zizou Bergs: 6-1, 6-4, 6-4
• Lorenzo Musetti (10) beat Flavio Cobolli (24): 6-3, 6-2, 2-0 ret.
• Taylor Fritz (4) beat Jerome Kym (Q): 7-6 (3), 6-7 (9), 6-4, 6-4
• Tomas Machac (21) beat Ugo Blanchet (Q): 7-5, 6-3, 6-1
• Novak Djokovic (7) beat Cameron Norrie: 6-4, 6-7 (4), 6-2, 6-3
• Jan-Lennard Struff (Q) beat Frances Tiafoe (17): 6-4, 6-3, 7-6 (7)
• Adrian Mannarino beat Ben Shelton (6): 3-6, 6-3, 4-6, 6-4 ret.
• Carlos Alcaraz (2) beat Luciano Darderi (32): 6-2, 6-4, 6-0
• Arthur Rinderknech beat Benjamin Bonzi: 4-6, 6-3, 6-3, 6-2
• Jiri Lehecka (20) beat Raphael Collignon: 6-4, 6-4, 6-4