Roger-Vasselin beats Querrey to reach Nice semifinals
Roger-Vasselin broke the third-seeded Querrey twice in the final set to lead 5-1 before converting his first match point with a forehand winner. Roger-Vasselin will play Spain's Albert Montanes, a 6-4, 6-1 winner over France's Paul-Henri Mathieu.
In the other quarterfinals, Spain's Pablo Andujar beat second-seeded Gilles Simon of France 6-4, 7-5, and France's Gael Monfils edged Dutchman Robin Haase 6-2, 6-3.
The tournament is a warm-up event for the French Open, which starts Sunday.