Second seed Rafael Nadal set up a Paris Tennis Masters semi-final clash with third seed Novak Djokovic by defeating title-holder Jo-Wilfried Tsonga 7-5 7-5.
Djokovic had earlier beaten Robin Soderling of Sweden 6-4 1-6 6-3 in the first quarter-final to reach the last four in Paris for the first time.
The losses for Tsonga and Soderling mean that Spain's Fernando Verdasco is assured of the eighth and final spot in the November ATP Tour Finals in London.
The other players qualified for the London finals are Nadal, Federer, Djokovic, Andy Murray, Juan Martin del Potro, Andy Roddick and Nikolay Davydenko.
