PARIS -- Serena Williams won her opening match at the French Open, and then achieved a career breakthrough by speaking French to the crowd for the first time.

"I'm a beginner," Williams said – referring to her French, not tennis.

Her play spoke volumes Sunday. Williams returned to the red clay that tripped her up in the first round a year ago, channeled any lingering frustration into her overpowering strokes and drubbed Anna Tatishvili 6-0, 6-1.

Roger Federer, the 2009 champion, remained unbeaten in first-round matches at major tournaments since 2003 by sweeping qualifier Pablo Carreno Busta 6-2, 6-2, 6-3. Sam Querrey, the highest-ranked American on the men's tour, equaled his best showing ever at Roland Garros by reaching the second round when he beat Lukas Lacko 6-3, 6-4, 6-4.

Williams lost her opening match at a Grand Slam tournament for the only time in her career a year ago, when she was beaten by France's Virginie Razzano. That was the most shocking in a succession of losses for Williams at Roland Garros, where she hasn't won the title since 2002 and hasn't reached the semifinals since 2003.

Determined to avoid another bad start, Williams won the first nine games, and 30 of the first 37 points. There was no letup from there, and she was still pumping her fist and shouting "Come on!" a game from the finish.

Williams won 56 of 78 points, including 28 of 33 on her serve, and hit eight aces. She maintained a stern expression throughout the match, and allowed herself only a brief smile when Tatishvili pushed a forehand wide on match point.

Williams, who keeps an apartment in Paris, was then interviewed on center court and spoke French with only a slight accent.

"I think I am French because I have a flat here," she said. "I love Paris."

She'll face tougher competition in the rounds to come – Tatishvili fell to 2-11 this year and 0-3 at the French Open.

Others advancing on a chilly, gray first day of play included Sara Errani, the 2012 runner-up to Maria Sharapova, and 2008 champion Ana Ivanovic.

American Mallory Burdette, whose ranking has climbed to a career-best 80th from 142nd at the start of the year, made a successful Roland Garros debut by beating Donna Vekic 6-3, 6-4.

Burdette, a 22-year-old Stanford alum, said she has enjoyed learning how to play on clay.

"It's a bit of a challenge," she said. "You have to change up your strategy a little bit, especially if you're a big hitter. It takes a little bit of effort, but it's fun."

Former No. 1 Lleyton Hewitt lost a seesaw marathon to No. 15-seeded Gilles Simon, 3-6, 1-6, 6-4, 6-1, 7-5.

Play began with the temperature in the mid-50s, and an hour into the tournament, Errani was into the second round. The tenacious Italian beat Arantxa Rus 6-1, 6-2 in the opening match on Court Suzanne Lenglen.

Errani reached a Grand Slam final for the first time a year ago at Roland Garros.

"Last year was an unbelievable tournament, the best tournament of my life," Errani said. "But I don't want to think about that. I just want to come here and play another tournament. I try to concentrate on my tennis, not too much about last year."

Now ranked a career-best No. 5, Errani dominated Rus from the baseline and won four games at love. Rus double-faulted seven times and lost her 13th consecutive match on the WTA Tour.

Ivanovic, seeded 14th, beat Petra Martic 6-1, 3-6, 6-3. Ivanovic improved to 30-4 in the first round of Grand Slam tournaments.

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  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America serves in her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America plays a backhand in her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Roger Federer of Switzerland serves during his Men's Singles match against Pablo Carreno-Busta of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America waves to the crowd as she celebrates match point in her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Australia's Lleyton Hewitt serves to France's Gilles Simon during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America serves in her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-FRA-OPEN-WOMEN

    France's Virginie Razzano hits a forehand shot to France's Claire Feuerstein during a French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / THOMAS COEX (Photo credit should read THOMAS COEX/AFP/Getty Images)

  • TENNIS-FRA-OPEN-WOMEN

    France's Virginie Razzano hits serves to France's Claire Feuerstein during a French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / THOMAS COEX (Photo credit should read THOMAS COEX/AFP/Getty Images)

  • TENNIS-FRA-OPEN-WOMEN

    Germany's Sabine Lisicki returns to Sweden's Sofia Arvidsson during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Spain's David Ferrer returns to Australia's Marinko Matosevic during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Leonardo Mayer of Argentina plays a forehand in his Men's Singles match against Andreas Seppi of Italy during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Julian Finney/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Australia's Marinko Matosevic returns to Spain's David Ferrer during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Spain's David Ferrer returns to Australia's Marinko Matosevic during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Spain's David Ferrer serves to Australia's Marinko Matosevic during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Andreas Seppi of Italy plays a forehand in his Men's Singles match against Leonardo Mayer of Argentina during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Julian Finney/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    A picture taken with a tilt and shift lens shows France's Gilles Simon serving to Australia's Lleyton Hewitt during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

  • TENNIS-FRA-OPEN-WOMEN

    Sweden's Sofia Arvidsson serves to Germany's Sabine Lisicki during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Marinko Matosevic of Australia plays a backhand in his Men's Singles match against David Ferrer of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Matthew Stockman/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Marinko Matosevic of Australia plays a backhand in his Men's Singles match against David Ferrer of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Matthew Stockman/Getty Images)

  • TENNIS-FRA-OPEN-WOMEN

    Germany's Dinah Pfizenmaier reacts after a point against Luxembourg's Mandy Minella during a French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / MIGUEL MEDINA (Photo credit should read MIGUEL MEDINA/AFP/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Spain's David Ferrer serves ti Australia's Marinko Matosevic during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / MIGUEL MEDINA (Photo credit should read MIGUEL MEDINA/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Roger Federer of Switzerland plays a forehand during his Men's Singles match against Pablo Carreno-Busta of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Argentina's Leonardo Mayer serves to Italy's Andreas Seppi during a French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / THOMAS COEX (Photo credit should read THOMAS COEX/AFP/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    France's Jeremy Chardy returns to Germany's Benjamin Becker during their French Tennis Open first round match at the Roland Garros stadium in Paris, on May 26, 2013. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Roger Federer of Switzerland plays a forehand during his Men's Singles match against Pablo Carreno-Busta of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Roger Federer of Switzerland reacts during his Men's Singles match against Pablo Carreno-Busta of Spain during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Roger Federer of Switzerland shakes hands at the net with his opponent Pablo Carreno-Busta of Spain after their men's singles match during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America serves in her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Shelby Rogers of the United States plays a backhand during her women's singles match against Irena Pavlovic of France during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Matthew Stockman/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Mallory Burdette of the United States plays a forehand during her women's singles match against Donna Vekic of Croatia on day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Switzerland's Roger Federer (L) shake hand with Spain's Pablo Carreno-Busta after winning their French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / PATRICK KOVARIK (Photo credit should read PATRICK KOVARIK/AFP/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Anna Tatishvili of Georgia serves during her women's singles match against Serena Williams of the United States of America during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Laura Robson of Great Britain smiles during a training session on day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Julian Finney/Getty Images)

  • 2013 French Open - Day One

    PARIS, FRANCE - MAY 26: Serena Williams of the United States of America slips during her Women's Singles match against Anna Tatishvili of Georgia during day one of the French Open at Roland Garros on May 26, 2013 in Paris, France. (Photo by Clive Brunskill/Getty Images)

  • TENNIS-FRA-OPEN-MEN

    Switzerland's Roger Federer hits a backhand shot to Spain's Pablo Carreno-Busta during a French tennis Open first round match on May 26, 2013 at the Roland Garros stadium in Paris. AFP PHOTO / PATRICK KOVARIK (Photo credit should read PATRICK KOVARIK/AFP/Getty Images)