Fourth round action at Roland Garros is done for Monday. The big upset of the day was on the women's side of the tournament as No. 7 Na Li lost to Yaroslava Shvedova, 3-6, 6-2, 6-0.
Other women's winners include No. 2 Maria Sharapova, defeating Klara Zakopalova, 6-4. 6-7 (5-7), 6-2, No. 4 Petra Kvitova defeated Vavara Lepchenko in straight sets, 6-2, 6-1 and No. 23 Kaia Kanepi defeated Arantxa Rus 6-1, 4-6, 6-0.
On the men's side of the tournament, a pair of top line seeds lost their fourth round match. No. 7 Tomas Berdych lost to No. 9 Juan Martin del Potro, 7-6 (8-6), 1-6, 6-3, 7-5 and No. 8 Janko Tipsarevic lost to No. 12 Nicolas Almagro in straight sets, 6-4, 6-4, 6-4.
No. 2 seed Rafael Nadal won his fourth round match over No. 13 Juan Monaco in straight sets, 6-2, 6-0, 6-0. No. 4 Andy Murray defeated No. 17 Richard Gasquet 1-6, 6-4, 6-1, 6-2, No. 5 Jo-Wilfried Tsonga defeated No. 18 Stanislas Wawrinka in a five set match, 6-4, 7-6 (8-6), 3-6, 3-6 and No. 6 David Ferrer defeated No. 20 Marcel Granollers in straight sets 6-3, 6-2, 6-0.
You can see a complete scoreboard from the 2012 French Open here.
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