The U.S. Open continues Tuesday, with No. 1 seed Victoria Azarenka facing Samantha Stosur in women's quarterfinals action in Arthur Ashe Stadium at 10 a.m. CT. That match will be followed by No. 3 Maria Sharapova against No. 11 Marion Bartoli at approximately noon CT.

On the men's side, the focus will be on American Andy Roddick. The No. 20 seed will face No. 7 Juan Martin del Potro at 6 p.m. CT in fourth-round play. Roddick announced last week that he will retire after the tournament.

Also in fourth-round men's action, No. 2 Novak Djokovic will meet No. 18 Stanislas Wawrinka at Arthur Ashe at approximately 2 p.m. CT, while No. 4 David Ferrer will go up against No. 13 Richard Gasquet at Louis Armstrong Stadium at 11 a.m.

The full schedule and draw are available at the U.S. Open's official website. Television coverage begins on ESPN2 at 10 a.m. CT.

For ongoing match updates and top notch analysis of the 2012 U.S. Open, make sure that you check out SB Nation's dedicated tennis hub.