Overview

• Jannik Sinner retired trailing 3-2 in the third set against Tallon Griekspoor after 2 hours 36 minutes, with the score at 7-6(3) 5-7 2-3.
• Severe right‑leg cramps struck in the fourth game of the decider; a brief physio visit followed, but ATP rules do not allow a three‑minute medical time‑out for cramps.
• As the defending Shanghai champion, Sinner forfeits 950 points, with updated tallies reported as Alcaraz 11,340 and Sinner 10,000.
• The withdrawal came a week after Sinner won Beijing and a day after his Shanghai opener over Daniel Altmaier.
• Organizers recorded the third in‑match retirement of the day and sixth of the tournament, with play affected by heavy humidity reported around 80%.