WASHINGTON (AP) - American teen Ryan Harrison extended his strong showing on the U.S. hard-court circuit by overcoming 10 double-faults to beat Mischa Zverev of Germany 6-4, 1-6, 6-1 Tuesday in the Legg Mason Tennis Classic.
The 19-year-old Harrison will face No. 3-seeded Viktor Troicki in the second round. Harrison reached the semifinals at his past two tournaments, in Atlanta and Los Angeles, lifting his ranking to a career-best 82nd.
Also Tuesday, Ryan Sweeting defeated Alex Bogomolov Jr. 6-2, 6-4 in an all-American matchup. Sweeting faces top-seeded Gael Monfils next.
Fernando Gonzalez, the 2007 Australian Open runner-up, withdrew shortly before he was to play Tommy Haas. Gonzalez cited a bad knee and was replaced by Amer Delic, who lost in qualifying.