No. 8 seed Irina-Camelia Begu and Aravane Rezai each advanced. Rezai outlasted Magdalena Rybarikova 6-4, 2-6, 6-1 in a first-round match, and Begu edged Gisela Dulko 6-4, 6-3 to reach the third round.
Melanie Oudin, who won her wild-card match on Monday, threw out one of the ceremonial first pitches prior to the Texas Rangers' game against the Boston Red Sox on Tuesday night. Oudin, 19, said it was the second time she's thrown a pitch after doing so at an Atlanta Braves game a few years ago.
"It's a really tough tournament for a $220,000 tournament," Oudin said of the Texas Open. "Players are wanting to play some good matches before (the U.S. Open) next week."
Information from The Associated Press was used in this report.