Federer’s former coach explains why Sinner might struggle to defend US Open title: ‘It becomes difficult to regain…’

Federer’s former coach explains why Sinner might struggle to defend US Open title: ‘It becomes difficult to regain…’

World No 1 Jannik Sinner, who had won his maiden Wimbledon title last month, enters the US Open on the back of an illness that had forced him to retire in the Cincinnati Open final against fierce rival Carlos Alcaraz recently.

Jannik Sinner was under the weather on the day of the Cincinnati Open final against Carlos Alcaraz, and retired while trailing 0-5 in the opening set. Reuters