American Andy Roddick claimed one of the three remaining spots for the Masters Cup, while world number three Novak Djokovic crashed out of the Paris Masters in the third round on Thursday. A dream final between Roger Federer and Rafael Nadal was still in the cards after the two top seeds advanced to the quarterfinals. Federer swept past Croatian Marin Cilic 6-3, 6-4 while Spaniard Nadal beat local favorite Gael Monfils 6-3, 6-2. Nadal will now meet Russian sixth seed Nikolay Davydenko, a 6-1, 6-1 winner against unseeded Czech Tomas Berdych. Roddick booked his ticket to Shanghai by ending the run of Frenchman Gilles Simon with a 6-3, 7-5 victory. Roddick will next face another Frenchman, Jo-Wilfried Tsonga. Simon, eighth in the ATP Race, still has a chance of joining Nadal, Federer, Djokovic, Andy Murray, Nikolay Davydenko and Roddick in Shanghai but his fate now depends on his rivals' results in Paris. Despite Simon's exit, the crowd at Bercy still had plenty to cheer about as Australian Open runner-up Tsonga produced some amazing shots to down Djokovic 6-4, 1-6, 6-3. Tsonga also has an outside chance of qualifying for the Masters Cup. Argentine David Nalbandian also hit some brilliant shots to thrash Davis Cup teammate Juan Martin Del Potro 6-4, 6-0 and keep his hopes of travelling to Shanghai alive. Nalbandian will secure a place in the season ender if he triumphs in the French capital. Del Potro, seventh in the ATP Race, will miss out on a Masters Cup spot if Nalbandian faces James Blake in the final and the Argentine claims the crown. Nalbandian will next face Briton Andy Murray as the world number four eased past Spain's Fernando Verdasco 6-3, 7-6. American Blake produced a clinical 6-4, 6-4 victory against German Philipp Kohlschreiber to stay in the running for China. Petrova in Quebec quarters In Quebec, top-seeded Russian Nadia Petrova advanced to the quarterfinals of the $175,000 Bell Challenge WTA tennis tournament Wednesday with a straight-sets win over Varvara Lepchenko. Petrova, a former world No. 3 who is currently ranked 11th in the world, beat the American qualifier 6-2, 6-4 to stay on course for a ninth career title. She next faces Hungarian Melinda Czink, who defeated 2007 semifinalist Julie Ditty of the United States 6-1, 6-1. American Melanie Oudin, who ousted second-seeded Austrian Sybille Bammer in the first round, kept up her winning ways with a 6-1, 7-6 (7-3) victory over 2006 Quebec runner-up Olga Puchkova of Russia. Oudin will face sixth-seeded compatriot Bethanie Mattek of the United States, who booked her quarterfinal berth despite a spirited challenge from Canadian wildcard Valerie Tetreault. Tetreault, with fierce backing from the crowd, twice served for the match before Mattek pulled off a 7-6 (7-4), 3-6, 7-6 (7
