THE ASSOCIATED PRESS
PARIS — French Open champion Li Na retired with a sore back in the second set of her opening match at the Open GDF Suez against Tsvetana Pironkova on Tuesday.
The third-seeded Li took a medical timeout while trailing 7-6 (5), 3-2 to have her lower back massaged by a physio and played a couple more points before retiring.
"I was feeling my back … It was so painful," Li said. "That’s why I called the physio to come to the court. I tried to tape and then tried to play the point, but it didn’t work.
"I’ll go to the hospital to take an MRI to see what happened."
Li rallied from a 5-0 deficit to force a tiebreaker but she then double-faulted at 3-2 to give Pironkova a mini-break. The unseeded Bulgarian took the first set on a forehand error from Li before jumping out to a 3-1 lead in the second.
"I played last week in the Fed Cup in Israel, I played some good matches which helped for my form and for my confidence," Pironkova said. "So I felt pretty good coming here and I’m glad I could show it on the court today against such a world class player."
Petra Cetkovska of the Czech Republic, Petra Martic of Croatia and Chanelle Scheepers of South Africa also advanced to the second round along with three German players — Julia Goerges, Angelique Kerber and Mona Barthel.
Goerges cruised past Shahar Peer of Israel 6-1, 6-3.
The sixth-seeded German won nine straight games to take the first set and go 4-0 up in the second.
Kerber beat Lucie Safarova of the Czech Republic 6-2, 7-6 (3).
A two-time finalist at this tournament, Safarova served seven double-faults and made numerous unforced errors.
Kerber broke Safarova twice in the first set. The U.S. Open semifinalist then won five straight points to lead 5-1 in the tiebreaker, clinching victory when Safarova’s backhand return sailed long.
Scheepers ousted Polona Hercog of Slovenia 6-2, 6-2, Barthel eased past Barbora Zahlavova Strycova of the Czech Republic 6-3, 6-2, Cetkovska defeated Italian lucky loser Alberta Brianti 6-3, 6-3, and Martic beat Greta Arn of Hungary, 6-4, 6-4.
Fourth-seeded Jelena Jankovic withdrew Tuesday because of a left thigh strain she picked up in Serbia’s 3-2 win over Belgium in the Fed Cup last week.
"I was playing against (Kirsten) Flipkens and during one point in the second set, I felt a really sharp pain, but I managed to finish the match," Jankovic said.