Serbia's World Number One Novak Djokovic has made a shock exit from the Miami Open Tennis tournament. In the biggest upset of the competition, Djokovic was stunned by Tommy Haas of Germany, in straight sets, 2-6, 4-6 in the Men's Singles pre-quarterfinal fixture. Fourth seeded Frenchman Jo-Wilfried Tsonga also crashed out, with a shocking, 5-7, 6-7 defeat to lower seed Marin Cilic of Croatia. However, second seeded Briton Andy Murray, Spaniard David Ferrer and Tomas Berdych of the Czech Republic have advanced into the Men's Singles quarterfinals.In the Women's Singles, World Number One Serena Williams of the United States and Agnieszka Radwanska of Poland have waltzed into the semi-finals. In the quarterfinals, Serena defeated Na Li of China, 6-3, 7-6, while fourth seed Radwanska beat Kirsten Flipkens of Belgium, 4-6, 6-4, 6-2. In the other two quarterfinals today, third seeded Russian Maria Sharapova will meet Italy's Sara Errani, while another Italian Roberta Vinci will take on Jelena Jankovic of Serbia.Meanwhile, India's campaign in the tournament has come to an end. In the Women's Doubles, the seventh seeded Indo-American duo of Sania Mirza and Bethanie Mattek-Sands bowed out after losing to the top seeded Italian pair of Sara Errani and Roberta Vinci, 1-6, 4-6. Earlier, Leander Paes, Mahesh Bhupathi and Rohan Bopanna, with their respective partners, in the Men's Doubles and Somdev Devvaman in the Men's Singles had crashed out of the competition, without much success.