Fifth seed Jelena Jankovic snuffed out the challenge of Slovak Magdalena Rybarikova 6-1, 6-2 and Russian seventh seed Svetlana Kuznetsova was at her ruthless best in a 49-minute 6-0, 6-2 demolition of Kazakhstan's Galina Voskoboeva.

With little to analyse in yet another easy victory, Jankovic passed on something new she had learnt from Serbia's President Boris Tadic when he made a flying visit to Roland Garros.

"He gave us some tips yesterday. Did you know if you eat fruit after the meal you get fat? If you eat it late in the afternoon or in the evening, it turns into fat. That's sugar," Jankovic told a bunch of amused reporters.

While Jankovic has sliced through the draw, the Williams sisters have given the fans value for money.

After shedding seven kilos to regain her slimline figure, Jelena Jankovic has opted to add weight to her expectations.

"I think I'm coming back. This is the most important thing for me, especially when you saw me playing a few months ago," the fifth-seeded Serb told reporters.

Former world number one Jankovic arrived in Paris with no specific goals following an under-par start to her season.

"It was really disastrous. I was moving terrible. I was making so many errors. My game was completely off, as well as my confidence," added the 24-year-old Serb, who will face Australian Jarmila Groth for a place in the fourth round at Roland Garros.