Rafael Nadal and Serena Williams are the defending champions at the U.S. Open , which begins August 25 . Singles winners at the U.S. Open tennis tournament will receive $ 3 million . Ten years ago Roger Federer took home $ 1 million for bagging the title . Score: 6 Each round in the singles competition sees double-digit rises .
Singles winners at the U.S. Open tennis tournament will receive $ 3 million . Ten years ago Roger Federer took home $ 1 million for bagging the title . Score: 6 Each round in the singles competition sees double-digit rises .