Sinner Is No. 1 in Rankings for First Time and Already Is Looking Ahead to Wimbledon

Jannik Sinner clenches his fist after winning a point against Grigor Dimitrov during their quarterfinal match at the French Open in Paris on June 4, 2024. Christophe Ena/AP Photo

PARIS—As pleased as Jannik Sinner was to make his debut at No. 1 in the ATP rankings on Monday, he already was looking ahead to what comes next.

So no big party to mark the significance of the occasion?