Paes and his Brazilian partner defeated Renzo Olivo and Benoit Paire 7-6(1) 6-2 in the opening round of the Euro 540,310 clay court event.
Paes has come into the tournament after winning a Challenger event in USA with Scott Lipsky. He and Sa next face Spanish team of Nicolas Almagro and Guillermo Garcia-Lopez.
Unseeded Indian team of Sharan and Raja shocked the third seeded team 6-0 7-6 (4) in their opening round.