World No. 2 Carlos Alcaraz cruised through to the fourth round of the U.S. Open with a straight-sets victory over Italian Luciano Darderi on Friday at Arthur Ashe Stadium. But Alcaraz had a bit of a scare during the second set. While leading Darderi 5-4, the Spaniard approached the chair umpire and asked for the physiotherapist. Apparently, Alcaraz was feeling some discomfort in his leg, as the physio was treating his right knee area.
Alcaraz then was able to win the second set and ultimately, the match.
