FOOTHILL RANCH, Calif., Sept. 3 /PRNewswire/ -- Oakley, Inc. today announced that tennis pro Janko Tipsarevic relied on Oakley's groundbreaking new prescription lens technology as he defeated number-nine ranked Andy Roddick in the second round of the U.S. Open Tournament.

Viktor Troicki and Janko Tipsarevic won their singles matches Saturday, allowing Serbia to beat Germany at the ATP World Team Championship in Dusseldorf. Troicki downed Rainer Schuettler 6-4, 7-6 (7-5) and Tipsarevic trounced Philipp Kohlschreiber 6-2, 6-4. It's tough to explain, Trocki said.

Sweden used straight-set wins by Robin Soderling and Andreas Vinciguerra for a commanding 2-0 lead over the United States in the ATP World Team Championship. Soderling took out San Querrey, 6-2, 6-2, and Vinciguerra was a 7-5, 6-4 winner over Robby Ginepri Tuesday.

Top-seeded Belgrade native Novak Djokovic delighted partisans Wednesday by advancing at the inaugural clay-court Serbia Open. Djokovic was a 6-2, 4-6, 6-0 winner over Serb Janko Tipsarevic in a second-round match. The runner-up to Rafael Nadal at last week's Italian Masters failed to convert on his five break-point chances in the second set and was broken once in a tougher-than-expected tussle against his compatriot, but improved his record to 31-10 this season. In other matches, Lukasz Kubot of Poland was leading third-seeded Igor Andreev 3-2 in the first set when the Russian retired because of a rib injury; fifth-seeded Viktor Troicki of Serbia downed Spain's Marcel Granollers 6-3, 6-4; and unseeded Kristof Vliegen topped countryman Christophe Rochus, the No.

Spain used a victory by world No.