Fernando Verdasco of Spain rallied past Marin Cilic of Croatia 3-6, 6-2, 6-3 to reach the second round of the Paris Masters on Monday.
Philipp Kohlschreiber of Germany, Guillermo Garcia-Lopez of Spain and Kevin Anderson of South Africa also advanced.
The tournament is the last chance for some players to gain one of the last three remaining spots for the ATP World Tour Finals in London.
Cilic hit a forehand winner to take the first set but Verdasco bounced back by jumping to 3-0 leads in the second and third sets.
''It's slower than last year,'' Verdasco said. ''I prefer maybe a little bit more this court because it's slower and I have more time to prepare my shots.''
Verdasco is hoping to be on the Spain team for the Davis Cup final next month.
''If I play Davis Cup, then I will try to prepare and get ready for that final the best as possible,'' Verdasco said. ''And if I'm not, at least finish well here.''
Verdasco will next face fifth-seeded Tomas Berdych of the Czech Republic.
Earlier, Kohlschreiber defeated Mikhail Youzhny of Russia 6-4, 6-2. The German qualifier broke to lead 4-3 in the opening set before going 4-0 up in the second.
Garcia-Lopez edged Colombian qualifier Santiago Giraldo 6-4, 1-6, 6-4 and will next play sixth-seeded Jo-Wilfried Tsonga of France. Giraldo slammed his racket to the ground after netting backhander to lose the match.
Anderson had 13 aces to outlast Gilles Muller of Luxembourg 6-3, 4-6, 6-4.
