Federer downed by Isner in Paris Masters

By Julien Pretot PARIS (Reuters) - Roger Federer was knocked out of the Paris Masters on Thursday after falling to a 7-6(3) 3-6 7-6(5) third-round defeat against big serving John Isner. The third-seeded Swiss held serve throughout but lost the two tiebreaks against his American opponent, who will face Spain's David Ferrer in the quarter-finals. Federer, who won the Basel title last Sunday, seemed to be cruising after breezing through the second set, but Isner pushed him to another tiebreak, usin