Djokovic overcomes Thiem after wild first-set tiebreaker in London
Novak Djokovic got off to a winning start at the World Tour Finals, but not before he lost a brutal first set against Dominic Thiem in the opening match of Group B round-robin competition. Djokovic ended up prevailing 6-7(10), 6-0, 6-2 after two hours and two minutes. […]