Tuesday’s featured matches at the U.S. Open

Beginning 8 a.m. PDT

Seedings in parentheses

Arthur Ashe Stadium

Agnieszka Radwanska (2) vs. Nina Bratchikova; Andy Roddick (20) vs. Rhyne Williams; Bethanie Mattek-Sands vs. Venus Williams

Grandstand

(second match on) Jo-Wilfried Tsonga (5) vs. Karol Beck

Louis Armstrong Stadium

Tomas Berdych (6) vs. David Goffin; Sam Querrey (27) vs. Yen-Hsun Lu

Beginning at 4 p.m. PT

Arthur Ashe Stadium

Novak Djokovic (2) vs. Paolo Lorenzi; Serena Williams (4) vs. Coco Vandeweghe