In a major upset, qualifier Daniel Elahi Galan defeated Stefanos Tsitsipas in the first round of the US Open.
The Colombian displayed terrific aggression early away, denying the world number four any opportunity to dominate. Tsitsipas lost the first set 0-6.
In the third set, it appeared that Tsitsipas had finally found his groove. He showed his grit by winning the third set 6-3 and mounting a comeback.
Tsitsipas was no match for Daniel Elahi Galan, who won the match 6-0, 6-1, 3-6, and 7-5.
“He played like a world-class player and I played like close to an amateur, not very nice to say that, but that’s what happened," Tsitsipas said.
“I was very motivated and pumped before the US Open started because I knew I could use this tournament to get closer to the No. 1 spot,” Tsitsipas said.
Following Tsitsipas' defeat, the four players who now have a chance to be ranked No. 1 after the Open are: the defending champion Daniil Medvedev; Rafael Nadal; Carlos Alcaraz; and Casper Ruud.