Bartoli cruises in Stuttgart opener

Eighth-seeded Marion Bartoli of France beat Bulgaria's Tsvetana Pironkova 6-4, 6-1 on Monday to advance to the second round of the Porsche Grand Prix tournament on indoor red clay.

Kristina Barrois, a wild card entrant from Germany, defeated Lucie Safarova of the Czech Republic 6-1, 6-4 in another first-round match.

Top-ranked Caroline Wozniacki and the three other top-seeded players - Vera Zvonareva, Francesca Schiavone and Victoria Azarenka - all have byes into the second round.