Johanna Konta suffered a painful exit in Women's Singles at the French Open , sliding out 1-6, 7-6, 6-4 at the hands of Hsieh Su-Wei in the opening round of the claycourt grand slam.Hsieh will next play American Taylor Townsend, who beat Japanese qualifier Miyu Kato 6-4, 6-0. In-form Ukrainian Elina Svitolina moved swiftly into the second round, easing through a potentially tricky encounter against Yaroslava Shvedova with a 6-4, 6-3 victory. The fifth seed, one of the pre-tournament favourites after winning the Rome claycourt tournament, was just a cut above her Kazakh opponent, who has reached the quarter-finals twice.In Men's singles, Juan Martin del Potro made a successful return to Roland Garros after a five-year absence, setting aside injury concerns to sail through 6-2, 6-1, 6-4 against fellow Argentine Guido Pella. The 29th seed, whose career has been plagued by injury, only confirmed his participation in this year's French Open on Friday after suffering shoulder and back problems.