Monaco, the No. 5 seed, downed Frenchman Josselin Ouanna 6-3, 6-2.
France's Julien Benneteau beat Spaniard Alberto Martin 7-6 (7-1), 6-1 and Florent Serra of France eliminated Belgian Christophe Roche 6-3, 6-3 in other opening matches.
Jo-Wilfried Tsonga of France is the event's No. 1 seed.
2014: The Year in Music [PHOTOS]