Jelena Jankovic overcame problems with her serve to claim a 2‑6, 6-4, 6-4 win over world No94 Melinda Czink in the second round of the Mercury Insurance Open.
The third-seed had a first‑round bye and struggled throughout against the Hungarian before closing the match out in the third set.
“I was in trouble,” said the world No19 from Serbia, who was successful with only 55 per cent of her first serves. “It wasn’t easy. I was pushed. I had to change something.”
Britain’s Heather Watson and her doubles partner Janette Husarova lost 6-4, 2-6, 10-8 to Chang Kai-chen and Noppawan Lertcheewakarn in the quarter-finals of the tournament in Carlsbad, California.
Defending champion Mardy Fish was forced to retire from his second‑round match at the Atlanta Open with an ankle injury. The second-seeded American was leading Luxembourg’s Gilles Muller 6-4, 3-2.
