Overview

• Defending champion Jannik Sinner retired in the third set against Tallon Griekspoor with severe cramping at 6-7 (3), 7-5, 3-2, dealing a blow to his ranking prospects late in the season.
• Novak Djokovic overcame world No. 150 Yannick Hanfmann 4-6, 7-5, 6-3 after vomiting on court, cited the 80% humidity as “brutal,” and will face Jaume Munar in the last 16.
• Carlos Alcaraz withdrew before the tournament with an ankle issue, while Stefanos Tsitsipas also pulled out citing a physical problem, adding to a week of retirements.
• Alexander Zverev fell to Arthur Rinderknech 4-6, 6-3, 6-2 and Taylor Fritz lost to Giovanni Mpetshi Perricard, leaving Alex de Minaur as the next highest seed through behind Djokovic.
• Players and analysts linked the spate of retirements to oppressive heat and a congested calendar, with criticism of 12-day Masters scheduling and rules that prevent on-court treatment for cramps.