PARIS -- As Michael Chang said his goodbyes to Roland Garros, Andy Roddick made another abrupt exit from the French Open in the opening round Tuesday.

Chang, who won this event in 1989, lost to Fabrice Santoro 7-5, 6-1, 6-1 in his final French Open. Sixth-seeded Roddick lost in the opening round for the second consecutive year, this time to Sargis Sargsian 6-7 (3), 6-1, 6-2, 6-4.

It was only two years ago that Roddick stopped an aging Chang from reaching the third round at the French in a thrilling match that some hoped showed a changing of the guard in American tennis. Since then, they've both exited Paris without winning a match.

Chang, 31, plans to retire after the U.S. Open. In a ceremony after his loss to Santoro, an emotional Chang received a standing ovation from the center-court crowd.

"This tournament has been so special to me,'' he said, his voice breaking. "The funny thing is that in my 16-year career, I've only cried twice, and both times were on this court.''

Chang became the youngest men's Grand Slam champion when he won his only major title at Roland Garros at age 17.

Roddick struggled with his serve, faced 20 break points and made another early Grand Slam exit. He has advanced beyond the third round only three times in 10 major events.

Five of six American men lost Tuesday, and the only winner was 32-year-old Todd Martin, who beat Jose Acasuso 4-6, 6-3, 6-4, 6-2.

Defending French Open champion Albert Costa was one game from a straight-set defeat before he rallied to beat an exhausted Sergio Roitman 6-7 (3), 2-6, 7-5, 6-2, 6-2.

Roitman has won just one match on the men's tour, but the Argentine led 5-4 in the third set before Costa came back.

Roitman has won just one match on the men's tour, but he led 5-4 in the third set before Costa came back.

Roitman called for a trainer in the third set to try to ward off cramping, and by the fifth set he limped badly at times. Costa raced to a 4-0 lead in the final set and closed out the victory in 3½ hours.

The No. 9-seeded Spaniard avoided becoming the first French Open defending champ to lose in the first round since the Open Era began in 1968. It's the first time he has won after dropping the first two sets.

No. 9-seeded Costa avoided becoming the first French Open defending champ to lose in the first round since the Open Era began in 1968. It's the first time he has won after dropping the first two sets.

Roitman lost in qualifying and made the 128-man draw only because of a withdrawal by another player. The match was just the fourth of his career, compared with 563 for Costa.

"I had never heard of him,'' Costa said. "I talked to the other guys from Argentina, and they said on a good day he's dangerous. That's what I felt on the court.''

Top-ranked Lleyton Hewitt, began his opening match as his girlfriend, Kim Clijsters, took center court. Hewitt was still playing nearly 2½ hours after Clijsters defeated Amy Frazier 6-2, 6-0, but he eventually eliminated American Brian Vahaly 6-4, 6-1, 6-7 (6), 6-3.

No. 3 Juan Carlos Ferrero, coming back from a shoulder injury that sidelined him two weeks ago, defeated Michel Kratochvil 7-5, 7-5, 6-4. Three-time champion Gustavo Kuerten beat Marc Rosset 6-2, 6-7 (3), 6-3, 7-6 (3).

No. 19 Fernando Gonzalez beat Jan-Michael Gambill 6-0, 6-2, 6-3.

Tim Henman, seeded 25th, beat Vladimir Voltchkov 6-2, 6-3, 6-1. It was the 11th consecutive loss on clay for Voltchkov.

Henman's opponent in the second round will be Todd Martin, who beat Jose Acasuso 4-6, 6-3, 6-4, 6-2. American Mardy Fish lost his French Open debut to Lars Burgsmuller, 7-6 (3), 6-2, 4-6, 6-1.

Other seeded men to advance included No. 21 Gaston Gaudio, No. 28 Tommy Robredo and No. 32 Arnaud Clement.

Gaudio, whose 26 clay-court victories this year lead the men's tour, eliminated Paul-Henri Mathieu 7-5, 6-3, 6-3. Robredo advanced when Giovanni Lapentti retired with leg cramps leading 3-6, 7-6 (3), 3-6, 3-1. Frenchman Clement delighted a center court crowd by beating Thomas Enqvist 6-3, 6-4, 6-2.

Greg Rusedski, playing his first match since last year's U.S. Open, lost to Nikolay Davydenko 6-3, 7-5, 6-2.