Day 9 of the 2012 U.S. Open will open at 11 a.m. Tuesday, but the most anticipated match will come at 7 p.m. when American Andy Roddick takes on No. 7 Juan Martin Del Potro in a Round of 16 contest. Roddick could be playing at Arthur Ashe Stadium for the final time, as earlier in the tournament he announced his retirement.
Other notable men's singles matches feature No. 2 Novak Djokovic squaring off against Stanislas Wawrinka around 2 p.m. at Arthur Ashe Stadium.
Meanwhile, the women will be playing quarterfinal matches starting with No. 1 Victoria Azarenka facing No. 7 Samantha Stosur at 11 a.m. Following that match will be No. 3 Maria Sharapova meeting No. 11 Marion Bartoli.
11 a.m.-7 p.m.: ESPN2 and Tennis Channel
7-11 p.m.: ESPN2