Fourth seed Venus Williams encountered few problems as she brushed aside former French Open champion Mary Pierce in the third round at Roland Garros.
Williams beat the 2000 champion 6-3 6-1 to set up a last 16 meeting with Colombian 23rd seed Fabiola Zuluaga.
Although French player Pierce had several chances to break, she managed to do so just once.
The 30th seed also struggled with her serve, allowing 2002 runner-up Williams a comfortable victory.
Williams' season has been disrupted by an ankle injury but after looking match-rusty in her previous rounds, the 23-year-old said she was happy with her current form.
"The ankle is a lot better now and I don't have to worry about
twisting it again," she said.
"I feel I am right at my best now. Coming into the tournament I
felt good even though it's hard to know that I wasn't as prepared
the way I wanted to be.
"I have been playing well on clay
this year, it's a question of putting it all together here."
Pierce said she was disappointed with her display, especially as she felt she was hitting good form again after an injury-hit couple of seasons.
"I wanted to do too well. I wanted to win that match too
badly. I put too much pressure on myself," she said.