Beijing Final Showdown: Sinner Dominates Learner Tien Jannik Sinner delivered another masterclass on the big stage, sweeping Learner Tien 6-2, 6-2 in the ATP 500 final in Beijing. The Italian’s relentless accuracy and power kept the 19-year-old from the United States off balance throughout the match, producing a victory that lasted 1 hour and 11…