WASHINGTON, DC: Top seed Juan Martin Del Potro and US eighth seed John Isner advanced to the final of the ATP and WTA Washington Open with rain-interrupted triumphs Saturday.
Seventh-ranked Del Potro, the 2009 US Open champion from Argentina, defeated German third seed Tommy Haas 7-6 (4), 6-3 while Isner blasted 29 aces in a 6-7 (7), 6-3, 6-4 victory over Russia’s Dmitry Tursunov.