German tennis player Alexander Zverev secured the world No. 1 ranking on October 29, 2026, after defeating Tallon Griekspoor of the Netherlands in the round of 16 at the Erste Bank Open in Vienna. The victory at Wiener Stadthalle makes Zverev the 30th man to hold the top spot in ATP rankings.
Zverev, who described the campaign as his best season, celebrated the milestone on court following the match. The Erste Bank Open, an ATP 500 event, served as the stage for the historic achievement.
