Former champion Ana Ivanovic out of French Open

(GETTY IMAGES)

Former French Open champion Ana Ivanovic was reduced to tears today wondering what had gone wrong after a first-round defeat at Roland Garros three years after winning the title.

The 20th-seeded Serb, who reached top spot in the world rankings when she prevailed on the Paris clay in 2008, lost 7-6 0-6 6-2.

"I'm very upset I lost, you know, because even though like I was injured, I felt like I was playing well," she told reporters as tears filled her eyes.

Ivanovic, 23, withdrew from the Strasbourg International last week because of a wrist injury but she said she did not feel any pain on court on Tuesday.

"The wrist now feels good. The inflammation is gone, so I hope it's not going to come back," she said.

Ivanovic seemed to have found her form when she rolled through a one-sided second set, despite still battling to stem unforced errors.

She went off the boil again in the sunshine on court Suzanne Lenglen in the decider and bowed out after one hour and 49 minutes when she netted a routine forehand.

"I wish I knew (what went wrong since 2008). I try to look back and see what I've done then and to do the same things. I'm just trying to work it out," she said.

Ivanovic has long battled injuries and this year has been no exception.

"It was always stop and go. I had physios traveling with me the last couple of weeks, but it hasn't really worked out the way it was supposed to," she explained. "It's very frustrating."