Williams takes on Pannetta during quarterfinals at the US Open Tennis Championship in New York

Serena Williams, second seed, of the USA, reacts as she wins a point in the second set against Flavia Pennetta of Italy during their quarterfinal match at the US Open Tennis Championship on September 8, 2009 in New York. Williams won 6-4, 6-3. UPI /Monika Graff ..