French Open: Dominic Thiem misplaced to Argentina’s Diego Schwartzman.© AFP

Argentine twelfth seed Diego Schwartzman defeated US Open champion and third seed Dominic Thiem in a five-hour epic to achieve the Roland Garros semi-finals on Tuesday. The 28-year-old Schwartzman triumphed 7-6 (7/1), 5-7, 6-7 (6/8), 7-6 (7/5), 6-2 and can face both 12-time champion Rafael Nadal or Italian teenager Jannik Sinner for a spot within the remaining.

It was a second marathon too many for Thiem, the runner-up in Paris for the final two years, who had wanted 5 units and three and a half hours to down world quantity 239 Hugo Gaston within the fourth spherical.

Schwartzman might be taking part in in his first semi-final on the majors.

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