Here is a roundup of Day 2 at the U.S. Open tennis tournament.
Maria Sharapova overcame a poor first set to defeat Jarmila Groth, 4-6, 6-3, 6-1.
James Blake defeated Belgium’s Kristof Vliegen, 6-3, 6-2, 6-4.
Novak Djokovic needed five sets to defeat Viktor Troicki 6-3, 3-6, 2-6, 7-5, 6-3.