TOKYO - Japan's former world No. 1 Naomi Osaka reached the semifinals of the DC Open on Friday after beating Italy's Elisabetta Cocciaretto 4-6, 6-4, 6-3.

Currently world No. 13, Osaka dropped the first set on the hard court in Washington but won the second, with one of seven double faults in the match from her 71st-ranked opponent sending the contest to the decider.

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