Serena Williams will clash with Caroline Wozniacki in the Women's Singles final of the US Open tennis today.While Serena stormed into the final beating Ekaterina Makarova of Russia, Caroline Wozniacki reached the final as her opponent Peng Shuai collapsed due to heat in the semi-final. Wozniacki has reached her first Grand Slam final in five years.If Serena beats Wozniacki, she will become the first woman since Chris Evert in the 1970s to win three consecutive titles at the tournament.In the Men's Singles, Kei Nishikori stunned world number one Novak Djokovic to become Japan's first Grand Slam singles finalist at the US Open.The 10th seed Nishikori will take on Marin Cilic for the title tomorrow.