Roddick goes to Shanghai, Djokovic out in Paris

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 on the cards after the two top seeds advanced to the quarter-finals.

Federer swept past Croatian Marin Cilic 6-3 6-4 while Spaniard Nadal beat local favourite Gael Monfils 6-3 6-2.

Roddick booked his ticket to Shanghai by ending the run of Frenchman Gilles Simon with a 6-3 7-5 victory.

The 2003 U.S. Open champion needed his best serve to beat the in-form Simon, who reached the Madrid Masters final earlier this month.

Although he managed only four points on Roddick's first serve, Simon proved a tough nut to crack and the American needed five match points to clinch victory.

"It's always an honour to qualify. I think this is six straight years, so that's a good accomplishment. I'm looking forward to it," said Roddick, who 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.