February 23, 2017

DELRAY BEACH, Fla. (AP) Defending champion Sam Querrey reached the Delray Beach Open quarterfinals by hitting 13 aces and winning 24 of 25 first-serve points in a 6-2, 6-3 victory over Jared Donaldson on Thursday.

Querrey, ranked 35th and seeded No. 4, saved both break points he faced and took exactly an hour to beat his 20-year-old opponent in an all-American match at the hard-court tournament.

Querrey next will face the winner of the match Thursday night between 2009 U.S. Open champion Juan Martin del Potro, who is seeded No. 7, and 79th-ranked Damir Dzumhur.

In other action, Donald Young followed up his upset of No. 2 seed Ivo Karlovic by coming back to eliminate 19-year-old Taylor Fritz 4-6, 6-3, 6-4 and get to the quarterfinals.

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