In one of the most physically grueling and alarming spectacles seen at the French Open in recent memory, 20-year-old Czech sensation Jakub Mensik pushed his body completely past its absolute physiological limits. The world No. 26 collapsed flat onto his back on the clay of Court 14 immediately after sealing a monumental second-round victory over Argentina’s clay-court specialist Mariano Navone. The brutal scoreline read 6-3, 2-6, 6-4, 1-6, 7-6(11) following a staggering four hours and 41 minutes of baseline warfare.