No. 1 Jannik Sinner has ramped up training ahead of Wimbledon title defense

Jannik Sinner said he's changed his physical workload after his French Open meltdown, when he felt ill and dizzy in a second-round loss. Sinner spoke Saturday — in English and Italian — at Wimbledon as he prepares to defend his singles title. With Carlos Alcaraz sidelined by a wr