While Alexander Zverev, Marin Cilic and Andrey Rublev; as well as now Damir Dzumhur have all tested negative, Viktor Troicki is the latest player to have tested positive.

It is the latest in a series of blows to the Adria Tour which took a major hit due to it's initial handling of the situation. Nick Kyrgios was the latest player to weigh in on it this morning calling it 'boneheaded'.

Novak Djokovic is set to announce whether he has tested positive or negative at some point on Tuesday; with lessons set to be learnt ahead of tennis' restart.