Washington: Russia's Daniil Medvedev overcame an ankle injury then fought off a match point to advance to the second round of the Washington Open on Monday.
Medvedev twisted his ankle late in the third set and fought off a match point against Reilly Opelka before he prevailed 6-7(8) 6-3 7-6(6) to move into a second round clash with American Steve Johnson.
The men's draw suffered a minor blow when John Isner, who won the Atlanta title last week and has been beaten three times in the final in Washington in 2007, 2013 and 2015, had to withdraw from the tournament with a knee injury.
"Disappointed to have withdrawn from the @CitiOpen this year," Isner posted on Twitter. "Unfortunately, I'm just not quite fit enough for it this year. I'll be back!"
In other first-round men's action, American Donald Young beat compatriot Tim Smyczek 4-6 6-3 6-4, to set up a second round clash with World No 9 Kei Nishikori.
World No 7 Dominic Thiem, the top seed, is due to play on Tuesday, while Argentina's former U.S. Open champion Juan Martin del Potro is also on the court.
Women's third seed Lauren Davis was upset by Aryna Sabalenka 7-5 6-3 on Monday, while former No 1 Jelena Jankovic retired while trailing Oceane Dodin 2-0 in the third set.
German fourth seed Julia Goerges defeated Francoise Abanda 6-4 6-4.
Top seeded Simona Halep will face American Sloane Stephens, who won the tournament in 2015 on Tuesday.
Updated Date: Aug 01, 2017 16:10 PM