Play at the 2012 U.S. Open has entered day two, and already four matches have been completed in Flushing Meadows, N.Y. Winning their first-round, women's singles matches and moving onto the second round after straight-set victories were Poland's Agnieszka Radwanska, Sweden's Sofia Arvidsson and Serbia's Ana Ivanovic.

Meanwhile, Russia's Mikhail Youzhny and Poland's Lukasz Kubot defeated Germany's Benjamin Becker and Finland's Jaarkko Nieminen, 6-1, 6-1, in the only men's doubles match completed.

Currently, men's No. 6-seed Tomas Berdych is taking on Belgian's David Goffin, who trails, 1-0, after Berdych won the first set, 7-5.

Shortly, Andy Roddick will face Rhyne Williams in a Round 1 match at Arthur Ashe Stadium, while after that -- around 5 p.m. ET -- Venus Williams will square off against Bethanie Mattek-Sands.

Serena Williams will play Coco Vandeweghe around 8:30 p.m. ET.

For complete coverage of the 2012 U.S. Open, stay tuned to this SB Nation New York StoryStream and visit SB Nation's Tennis hub.