CHARLESTON, S.C. -- Anna Kournikova withdrew from her first-round match against Conchita Martinez at the Family Circle Cup on Wednesday with an injured thigh muscle.

Top seed Serena Williams, meanwhile, won her rain-postponed opening-round match defeating Dally Randriantefy 6-3, 3-0. The WTA Tour presented Williams with a trophy in honor of the "Serena Slam" after the match.

Williams has won the last four Grand Slam tournaments, but like Tiger Woods, she has been denied the official Grand Slam because the wins were not in the same calendar year.

"Being one of the five that were able to do it in the history of tennis ... it is special," Williams said.

If Williams reaches her goal to go undefeated in 2003, she will be the first tennis player to win the Grand Slam since Steffi Graf in 1988.

Williams looked a little unfocused at the beginning of her match against Randriantefy, dropping three of the first four games. But Williams won the next 11 games, growing more confident with each point.

"I started ... slow," Williams said. "I made a few too many errors."

Martinez led 6-4, 1-1 in a match that was suspended by rain Tuesday with Kournikova leading 2-0.

After the first set, Kournikova received treatment and returned with her left upper thigh wrapped in an bandage.

Each player held serve for 1-1 in the second when Kournikova retired. She was slightly limping between points during Martinez's serve.

The 15th-seeded Martinez, who beat Kournikova in the first round here last year, will face Thatiana Garbin of Italy in the next round.

After enduring a two-hour rain delay, No. 2 seed Justine Henin-Hardenne rallied to beat Tina Pisnik of Slovakia 6-4, 3-6, 6-4.

No. 10 seed Amanda Coetzer of South Africa got her match completed just before the evening rain came, beating Laura Granville 6-7, 7-6 (4). Play was suspended at about 7 p.m., leaving about a half-dozen second-round matches unfinished.

In other matches, No. 14 seed Nathalie Dechy beat Marie-Gaianeh Makaelian 6-1, 6-4.

No. 6 seed Jelena Dokic needed just more than an hour to dispatch Maja Matevzic 6-1, 6-4. Dokic will face No. 13 seed Elena Dementieva, who beat defending Family Circle Cup champion Iva Majoli 3-6, 7-5, 6-1.

In the one upset of the day, Argentina's Paola Suarez took just an hour and 15 minutes to beat 12th seed Anna Pistolesi of Israel 7-5, 6-1. Suarez will play Russia's Vera Zvonareva, who beat eighth-seeded Patty Schnyder 6-2, 4-6, 6-4.