Novak Djokovic got his Paris Masters title defence under way with a straight-set victory against American Maxime Cressy.
The former world number one, who got a bye into the second round, beat Cressy 7-6 (7-1) 6-4 as he started his bid for a record-extending seventh title.
It is a 17th straight win for Serbia's 21-time Grand Slam champion, 35.
Earlier, Britain's Dan Evans and Jack Draper claimed wins to reach the last 32 in Paris-Bercy.
Djokovic dominated the tie-break in the opening set before seizing the only break of the match to go 5-4 up in the second and served out for his 11th win in a row at the Paris Masters.