From the high of upsetting one of the best players in the world to the low of failing to finish a U.S. Open quarterfinal match. Carlos Alcaraz, the 18-year-old Spaniard who became one of the biggest stories of the U.S. Open after his victory over No. 3 Stefanos Tsitsipas in the third round, ran the gamut of emotions. He saw his wild ride come to a crashing halt Tuesday night when he had to retire in the second set of his quarterfinal match against 12th-seeded Félix Auger-Aliassime at Arthur Ashe Stadium due to a right adductor injury. Trailing 6-3 and 3-1, Alcaraz couldn’t go on. “It’s really tough to end a great tournament like this,” he said. “I mean, I had no choice.” After playing long five-set matches in his previous two victories, the 55th-ranked Alcaraz felt the adductor prior to the match. Initially, he was able to manage the pain, but it worsened as the night went on. #CarlosAlcaraz #USOpen #Tennis #NewYorkPost The New York Post is your source for breaking news, news about New York, sports, business, entertainment, opinion, real estate, culture, fashion, and more. Catch the latest news here: https://nypost.com/ Follow The New York Post on: Twitter - https://twitter.com/nypost Facebook - https://www.facebook.com/NYPost