Andy Roddick of the US returns the ball to Roger Federer of Switzerland during their men’s singles tennis match, on day 11 of the Australian Open in Melbourne on January 29, 2009. Federer and Roddick are 5-1 as play continues. AFP PHOTO / PAUL CROCK (Photo credit should read PAUL CROCK/AFP/Getty Images)

Andy Roddick of the US returns the ball to Tommy Robredo of Spain during the men’s tennis match on the seventh day of the Australian Open in Melbourne on January 25, 2009. Seventh seeded Andy Roddick was in ominous form as he downed Spaniard Tommy Robredo 7-5, 6-1, 6-3 to reach the Australian Open quarter-finals. AFP PHOTO / TORSTEN BLACKWOOD (Photo credit should read TORSTEN BLACKWOOD/AFP/Getty Images)