In the Third Round of the U.S. Open at Flushing Meadows, second-seeded Agnieszka Radwanska defeated Jelena Jankovic in straight sets, 6-3, 7-5. Radwanska's opponent in the next round will be 20th-seeded Roberta Vinci, who finished off Dominika Cibulkova 6-2, 7-5 in her match.

Serena Williams, the world's fourth-ranked player, is currently tied with Ekaterina Makarova 4-4 in the first set. Williams won each of her first two matches in straight sets, defeating Coco Vandeweghe 6-1, 6-1 and Maria Jose Martinez 6-2, 6-4. Williams, of course, is coming off a Gold Medal performance in the Olympics, where she defeated Maria Sharapova in the final.

In the men's draw, third-seeded Andy Murray leads 30th-ranked Feliciano Lopez 5-4 in the first set, Nicolas Almagro took the third set 7-6 over Jack Sock after splitting the first two sets, Marin Cilic and Kei Nishikori are tied 5-5 in the third set after Cilic took the first two, and Jeremy Chardy dropped his first set to Martin Klizan 6-4.

For complete scores, check out USOpen.org.

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