Tennis: Adria Tour - day one highlights

Novak Djokovic gave tennis fans something to cheer about as he headlined the opening day of action on the Adria Tour. The world number one had a mixed day of results in Belgrade though, thrashing Viktor Troicki 4-1 4-1 in the day session, before losing to Filip Krajinovic in the evening. Alex Zverev and Dominic Thiem won both of their matches as they enjoyed perfect starts to the tournament. Each match at Djokovic's exhibition event is a best-of-three set encounter, with each set being the first to four games.