PARIS: Juan Martin del Potro fired up his power game after a sluggish start to ease past Nicolas Jarry in an all-South American first round clash at the French Open on Tuesday. The eighth seed, a semi-finalist last year, won 3-6 6-2 6-1 6-4, the four sets taking a little more than four hours. “The conditions were difficult at the start with wind and some rain, and Nicolas played so strong, but after that I took control of the game and played better,” Argentine del Potro said on Court Suzanne Lenglen. Chilean Jarry, ranked 58th and a finalist in Geneva last week, was a potentially tough hurdle for Del Potro, who is in just his third tournament since yet another injury break, this time to his right knee. Del Potro was joined in the second round by compatriot Federico Delbonis, who beat Spain’s Guillermo Garcia-Lopez.