US Open 2020: Dominic Thiem annoyed by Red Bull incident Unknown 19:50 Dominic Thiem admitted he was frustrated by officials during the U.S. Open second round. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsUFC star Conor McGregor calls time on mixed martial arts career after series of legal issues following Khabib Nurmagomedov lossMichael Schumacher's son Mick to test Ferrari F1 car in BahrainSiegfried Aikman interview: Japan boss on India's obsession with changing coaches, Asian hockey being at all-time low and moreOne, two, three, GO! (VIDEO)When is Tiger Woods' next tournament on the 2019 PGA Tour schedule?Miami Open 2019: Roger Federer sets up quarter-final clash against Daniil Medvedev; Simona Halep makes light work of Venus Williams