ZAGREB – Former Wimbledon champion Goran Ivanisevic, who now coaches Novak Djokovic and attended the top-ranked player's exhibition series in Serbia and Croatia, said Friday he has tested positive for the coronavirus.The Croatian great, who won his only Grand Slam title at the All England Club in 2001, wrote on Instagram that he tested positive after two negative tests in the last 10 days.“I would like to inform everyone who has been in contact with me that I tested positive and ask them to take extra good care of themselves and their loved ones,” Ivanisevic wrote. “I will continue to self-isolate as I have been doing already.”Ivanisevic, who said he has no symptoms, attended the Adria Tour exhibition series, a charity event hosted by.