STOCKTON, October 6, 2017

Four players completed the quarterfinals line-up at the $100,000 Stockton Challenger held at the Eve Zimmerman Tennis Center on the campus of University of the Pacific on Thursday.

Third seed Michael Mmoh rallied past fellow US-American Mackenzie McDonald 1-6, 6-2, 7-6. The World No. 156 from Florida fired 11 aces, winning 67 per cent of his first service points to prevail after two hours and 34 minutes.

Mmoh will next take on Russian qualifier Dmitry Tursonov, who defeated John-Patrick Smith of Australia 7-6, 6-3. Tursonov is playing his only eighth tournament of the season and will appear in his first quarterfinal since the ATP 250 event in Nice in 2014.

Elias Ymer also came back from a set down to overcome Frank Dancevic of Canada 3-6, 7-6, 6-4. The #NextGenATP player from Sweden capitalized on three of his eight break point chances to seal victory in two hours and 11 minutes. Next up for Ymer will be Tim Smyczek, who beat fellow US-American Christian Harrison 2-6, 6-3, 6-4 in one hour and 49 minutes.