Aug 18, 2025; Cincinnati, OH, USA; Carlos Alcaraz (ESP) poses for a photo with the Rookwood Cup after his match against Jannik Sinner (ITA) during the Cincinnati Open at the Lindner Family Tennis Center. Mandatory Credit: Aaron Doster-Imagn Images
(Reuters) -Carlos Alcaraz won the Cincinnati Open after top seed Jannik Sinner retired as he was feeling unwell on Monday, raising concerns about the Italian's fitness just days before he is due to begin the defence of his U.S. Open title.
The Spanish second seed snapped the world number one's 26-match winning streak on hardcourts when his ailing rival signalled he could no longer continue while trailing 5-0 in the first set of the final.
