India's Sania Mirza and her Brazilian teammate Bruno Soares have lifted the Mixed Doubles trophy of the US Open, the fourth and final Grand Slam of the season. In the title clash Friday night, the top seeded Indo-Brazilian pair defeated the American-Mexican team of Abigail Spears and Santiago Gonzalez, 6-1, 2-6, 11-9. This was Sania's maiden US Open and career's third Mixed Doubles Grand Slam title.In the Singles, America's world number one Serena Williams stormed into the finals to remain on course for a third consecutive US Open trophy. Six-time winner at New York, Serena defeated Russian Ekaterina Makarova, in straight sets, 6-1, 6-3.Denmark's Caroline Wozniacki also made it to the finals after China's Peng Shuai had to retire following a leg injury. The match ended, 7-6, 4-3. The final will be played tomorrow.