On Thursday, Andy Roddick announced he will retire from tennis after the U.S. Open. On Friday, he plays to keep his career going a couple of days longer. The No. 20-ranked Roddick can advance to the third round with a win over Bernard Tomic of Australia Friday night. Roddick and Tomic are scheduled to start at 7:00 ET on Arthur Ashe Court with television coverage on ESPN2.

In other important matches, No. 2-ranked Novak Djokovic faces unranked Rogerio Dutra Silva at approximately 1:00 ET Friday. No. 4-ranked David Ferrer will play Igor Sijsling of The Netherlands at 11:00 ET. No. 7-ranked Juan Martin del Potro draws American Ryan Harrison at approximately 1:00 ET. Ninth-ranked American John Isner follows del Potro, taking on Jarkko Nieminen on Louis Armstrong Court in the early afternoon.

The best Friday matchups are in the women's draw, where No. 7-ranked Samantha Stosur faces No. 31-ranked Varvara Lepchenko at 11:00 ET Friday morning. Top-ranked Victoria Azarenka will play No. 28-ranked Jie Zheng in Friday's late match. In the other second-round match between ranked players, No. 15-ranked Lucie Safarova and No. 19-ranked Nadia Petrova face off at approximately 3:00 ET. Maria Sharapova, the third-ranked player in the tournament, takes on American youngster Mallory Burdette, set to begin following the Djokovic-Silva match.

Elsewhere, the Williams sisters play Klaudia Jans-Ignacik and Kristina Mladenovic, the No. 15-ranked women's doubles team in the Open. The match is scheduled to start at 3:00 ET.

For the complete schedule, go to the U.S. Open website. Television coverage will begin on Tennis Channel at 10:30, moving to ESPN2 at 1:00 ET.

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