Casper Ruud says sweltering conditions made him feel like a 'zombie' as he reaches French Open 2nd round | CNN

Casper Ruud battled extreme heat to reach the French Open's second round at Roland Garros in Paris. The 15th-seeded Norwegian defeated Russian qualifier Roman Safiullin in a five-set marathon, 6-2, 7-6(5), 5-7, 0-6, 6-2, after three hours and 56 minutes. He led two sets to love in the third before Safiullin forced a decider. A European heat wave pushed temperatures to about 91.4F (33C) at the venue, with Météo-France reporting several towns posting May records. Ruud received a five-minute break after the fourth set and later admitted feeling dizzy, likening the moment to a heat stroke. He advances to face Serbia's Hamad Medjedovic on Wednesday.