Grigor Dimitrov after testing positive for COVID-19: I am so sorry

Grigor Dimitrov has tested positive for COVID-19, leading to the cancellation of an exhibition event in Croatia where top-ranked Novak Djokovic was due to play in the final. Dimitrov, ranked No. 19 and a three-time Grand Slam semifinalist, is the highest-profile current player to say he has the virus. His announcement Sunday on...