Indian Wells, California, Mar 10 : American wild-card entry Jamie Hampton beat former No. 1 Jelena Jankovic of Serbia 6-4, 6-3 in the second round of the BNP Paribas Open on Friday at the Indian Wells Tennis Garden.
A few minutes later, America's Christina McHale beat Elena Vesnina of Russia, 6-3, 7-5 to set up a possible third-round match against Wimbledon champion Petra Kvitova, who was scheduled to play the final match Friday night.
Hampton will face Jarmila Gajdosova of Australia in the third round. Gajdosova upset No. 22 seed Yanina Wickmayer of Belgium, 2-6, 6-2, 6-4.
Australian Open champion and top-ranked Victoria Azarenka was also scheduled to play with a matchup against Mona Barthel of Germany.
On the men's side, U.S. teenager Denis Kudla also won, taking a 2-6, 7-6 (3), 6-4 victory over Tobias Kamke of Germany. Kamke was a last-minute fill-in for Dmitry Tursunov of Russia, who withdrew due a wrist injury.
The men the crowd came to see -- No. 1 Novak Djokovic, No. 2 Rafael Nadal and American stars Andy Roddick and Mardy Fish -- didn't play singles Friday.
Hampton, who last week moved into the top 100 for the first time at No. 99, had never won back-to-back matches in a WTA Tour event, and her most recent match against a top-ranked player was a 6-0, 6-1 loss to Maria Sharapova in the second round of the Australian Open.
She said that this time the experience gained in Australia and her first-round win over 38th-ranked Polona Hercog both were beneficial against Jankovic.
"I didn't really know what to expect," said Hampton. "I think the fact that I got a match under my belt here helped me a lot. In Australia I didn't have that against Maria and she wiped the court with me."