Jo-Wilfried Tsonga and Janko Tipsarevic will take the final places in next week's ATP Tour Finals.
Victories in the last 16 of the Paris Masters means they will join Roger Federer, Novak Djokovic, Andy Murray, David Ferrer, Tomas Berdych and Juan Martin Del Potro in London.
Tsonga secured a place in the quarter-finals in Paris with a 7-6 (7-4) 7-6 (7-3) win over Spain's Nicolas Almagro.
Tipsarevic beat Argentina's Juan Monaco 6-3 3-6 6-3 to reach the last eight.
Unseeded American Sam Querrey, who beat Djokovic on Wednesday, saw off 14th seed Milos Raonic 6-3 7-6 (7-1).
Three French players will feature in the last eight for the first time in the history of the tournament.
Michael Llodra beat seventh seed Del Potro 6-4 6-3, while Gilles Simon advanced without hitting a ball after Kei Nishikori of Japan pulled out because of a recurrence of his right ankle injury.