LONDON—Jannik Sinner felt ill. He was dizzy. Hadn’t slept well the night before. Wimbledon’s top-seeded man, who recently attained the No. 1 ranking, definitely did not want to quit playing against Daniil Medvedev in the quarterfinals, but things were not looking good.
Sinner was treated by a trainer and left the court during the third set Tuesday, July 9, then briefly surged before faltering again down the stretch, eventually losing to a more-aggressive-than-usual Medvedev 6–7 (7), 6–4, 7–6 (4), 2–6, 6–3.
