PARIS — Maybe this is progress for Andy Roddick on clay: He lost serve seven times yesterday and still won.

On a rainy, chilly day at Roland Garros, Roddick endured two delays and difficult conditions to defeat Blaz Kavcic 6-3, 5-7, 6-4, 6-2.

The damp weather took some zip off Roddick’s biggest weapon, and for much of the match he was dueling from the baseline on his worst surface. But Roddick has become a more patient player in recent months, and he willingly settled into rallies that often lasted more than two dozen shots.

“I don’t know the last time I lost serve seven times and won,” Roddick said. “So, I mean, it’s bad, but there’s got to be something good in there somewhere, too.”

Ana Ivanovic hit another low in her slide since winning the French Open two years ago, losing in the second round to No. 28 Alisa Kleybanova 6-3, 6-0.

A former No. 1 player, Ivanovic was unseeded because she’s ranked only 42nd. The defeat marked her earliest exit in six trips to the French Open.

“It was a combination of a few things,” Ivanovic said. “I don’t think I played that bad, actually. For a while, I think she didn’t miss a ball at all.”

In other women’s matches, No. 4-seeded Jelena Jankovic, No. 5 Elena Dementieva and No. 11 Li Na won, while 39-year-old Kimiko Date Krumm lost to Jarmila Groth 6-0, 6-3. Three seeded women lost: No. 8 Agnieszka Radwanska, No. 21 Vera Zvonareva and No. 32 Kateryna Bondarenko.

On the men’s side, No. 4 Andy Murray beat Juan Ignacio Chela 6-2, 6-7 (5), 6-3, 6-2. American John Isner, seeded 17th, hit 38 aces and defeated Marco Chiudinelli 6-7 (3), 7-6 (3), 7-6 (7), 6-4. The only seeded man to lose was No. 13 Gael Monfils, who lost to Fabio Fognini 2-6, 4-6, 7-5, 6-4, 9-7.

Sixteen singles matches were postponed.