India's Sania Mirza was given a tough first-round game at the DFS Classic in Edgbaston by Ukraine's Alona Bondarenko before coming through 6-2 3-6 6-3.
Mirza is the first Indian woman to win a WTA event
Mirza's match was one of only four to be completed on a rain-hit second day.
Two-time defending champion Maria Sharapova's match with Ahsha Rolle was one of those rained off and the pair will now play their match on Wednesday.
Jarmila Gajdosova of Slovakia, Shuai Peng of China and American Bethanie Mattek were the only other winners.
Last year Mirza became the first Indian woman to break into the world's top 50, the first to win a tournament and to reach the US Open's fourth round.
"After what happened last year there's a lot of pressure on me, with people expecting me to do a lot better than I did," said Mirza.