Jannik Sinner, the top-ranked men's tennis player, began the US Open amidst controversy following revelations of two positive doping tests for the anabolic steroid Clostebol earlier this year. Despite the troubling backdrop, he secured a win against Mackie McDonald, advancing to the second round, and expressed gratitude for the support he received from fans, noting no apparent hostility in the crowd. The International Tennis Integrity Agency cleared him of fault, stating the substance entered his system unintentionally through a massage after a trainer used an over-the-counter spray. This leniency has upset some competitors, including Liam Broady, who criticized perceived favoritism towards Sinner. The case has sparked broader discussions on doping regulations and the treatment of players within the sport.