Austria’s tennis star Dominic Thiem has postponed his comeback. Actually, Thiem, who has not played a match since his injury in June, was supposed to take part in the Mubadala championship in Abu Dhabi from December 16 to 18. There he would have made his comeback against the Scots Andy Murray on Thursday. But on Tuesday, the Lower Austrian canceled his participation. “I have the feeling that I am not yet ready to keep up at the highest level,” Thiem justified his rejection.