MELBOURNE: Struggling former world number two Alexander Zverev was dumped out of the Australian Open in another setback on his return from serious injury.
The German 12th seed, a semi-finalist in Melbourne in 2020, lost to 107th-ranked Michael Mmoh 6-7 (1/7), 6-4, 6-3, 6-2 on Margaret Court Arena in round two.
It followed two defeats at the recent United Cup, his first ATP matches since tearing ankle ligaments at the French Open in June.
A planned return at the Davis Cup in September failed to materialise when the 25-year-old pulled out after experiencing "extreme pain".
The two-time ATP Finals champion, who has dropped to 13 in the world, was clearly still struggling against the American Mmoh, hitting 58 unforced errors and having his serve broken eight times.
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