LONDON - Japan's former World No. 1 Naomi Osaka was beaten 7-6(4), 6-4 by Karolina Muchova of the Czech Republic in the Wimbledon quarterfinals on Tuesday.

The four-time Grand Slam winner had booked her place in the last eight with a straight-sets victory over top seed Aryna Sabalenka, having never previously gone beyond the third round at the All England Club.

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