Five-time champion Roger Federer scored a brutal 6-1, 6-2, 6-0 win over Juan Monaco of Argentina to reach the quarter-finals of the U.S. Open tennis championship. At New York the third-seeded Swiss eliminated his unseeded opponent in just 82 minutes.The 16-time major champion advanced to a clash against 11th seeded Frenchman Jo-Wilfried Tsonga, who rallied to overcome eight-seeded American Mardy Fish 6-4, 6-7 3-6, 6-4, 6-2 in an enthralling center court clash.In the women's section top seeded Caroline Wozniacki beat Svetlana Kuznetsova 6-7, 7-5, 6-1. In other action, Serena Williams fought advanced to the quarterfinals of the US Open with a 6-3, 6-4 victory over Ana Ivanovic.Next up for Williams is No. 17 Anastasia Pavlyuchenkova, who made it to her second Grand Slam quarterfinal with a 5-7, 6-3, 6-4 win over former French Open champion Francesca Schiavone.Meanwhile, Indo-Russian pair of Leander Paes and Elena Vesnina will today lock horns with the American duo of Jack Sock and Melanie Oudin in the semi-finals of the mixed doubles event.In the Men's Doubles competition, the fourth seeded Indian duo of Leander Paes-Mahesh Bhupathi and the Indo-Pak combine of Rohan Bopanna-Aisam-ul-Haq Qureshi, will also play their respective quarter-final matches on Tuesday.While Paes and Bhupathi will clash with the Polish pair of Marcin Matkowski and Mariusz Fyrstenberg, the fifth seeded Indo-Pak duo will take on the Britons, Colin Fleming and Ross Hutchins.