WASHINGTON, July 23 (Xinhua) -- Following are the results on Saturday from the sixth day of the ATP and WTA Washington Open (prefix number denotes seeding):
Men's semi-finals
13-Ivo Karlovic, Croatia, bt 5-Steve Johnson, United States, 6-4, 6-4
2-Gael Monfils, France, bt 7-Alexander Zverev, Germany, 6-4, 6-0
Women's semi-finals
7-Yanina Wickmayer, Belgium, bt 6-Yulia Putintseva, Kazakhstan, 6-4, 6-2