Alexander Zverev will become men's tennis world No. 1 at the earliest opportunity on Monday after reaching the quarter-finals of the Erste Bank Open in Vienna, sealing a rise to the top of the rankings that seemed close to unthinkable at the start of the year. Zverev, 29, beat Tallon Griekspoor 6-4 7-5 to guarantee the move, and will become only the second German man ever to top the ATP rankings, after Boris Becker in 1991.
Zverev had already secured the year-end No. 1 ranking on October 12, when Carlos Alcaraz lost in the third round of the Shanghai Masters. But Thursday's win confirmed he would overtake Jannik Sinner on the live rankings too, becoming the first man other than Sinner and Alcaraz to hold the top spot since Novak Djokovic in June 2024. Sinner, the top-ranked player going into the season, has been ruled out for the rest of the year with a knee injury.
A Gap That Looked Unbridgeable
At the start of 2026, it seemed impossible that anyone but Sinner or Alcaraz would finish the year on top; the pair had split all eight Grand Slam titles between them across 2024 and 2025, and Alcaraz began this season with 12,050 ranking points to Sinner's 11,500, dwarfing third-ranked Zverev's 5,110 — a gap, statisticians noted, closer to the distance between Zverev and the world's 2,221st-ranked player than to the top two. But both rivals missed large chunks of the season through injury, and Zverev capitalised, winning the French Open and the US Open titles — at least one of his two rivals absent each time — and recording 64 wins in 80 matches overall. He did not face a top-10 opponent at either major until beating Ben Shelton in the US Open final.
"It's been a wait, but sometimes you have to wait for the best things in life," Zverev said after his Vienna win. "I'm super happy, super thrilled — I have no words for this year." He was candid about the role circumstance played in his breakthrough, conceding he would "maybe not" be world No. 1 if Sinner and Alcaraz were "healthy and at the top of their game" — but added that he had "efficiently beaten what has been in front of him," in what by any measure is the finest season of a career that had often threatened to fall short of the hype that followed him as a teenage prodigy.
Zverev now faces British No. 1 Arthur Fery in the Vienna quarter-finals, a rematch of their Wimbledon semi-final; Fery, 24, beat Italy's Lorenzo Musetti 6-4 5-7 6-4 to reach the last eight, overcoming apparent cramp to serve out the decisive set. Zverev's coronation arrives at a moment of flux at the top of men's tennis, with the sport's two dominant forces of the mid-2020s sidelined and a new name about to sit above them both on the official ranking list for the first time since 2024.
