Nick Kyrgios has fired shots at Jannik Sinner on social media after the Italian beat Taylor Fritz to win the US Open on Sunday night. Sinner was too strong for his rival, with the 23-year-old winning 6-3, 6-4, 7-5 to win his second Grand Slam of the year. It was an emotional moment for the Italian, who paid tribute to his seriously ill aunt after becoming the first man from his country to win the competition. Not everybody was so pleased to see him reign supreme, however. Before the tournament, Sinner failed two drug tests. He later protested his innocence, insisting an anabolic steroid had en…
