NEW YORK, Sept. 13 (UPI) -- Swiss star Roger Federer and Juan Martin del Potro of Argentina scored straight-set victories Sunday, advancing to the championship match of the U.S. Open.
World No. 1 Federer, trying for his sixth straight open title and 16th in a Grand Slam event, hit a between-the-legs winner that set up match point in a hard-fought 7-6 (7-3), 7-5, 7-5 win over Serb Novak Djokovic.