(CNN) Tennis star Grigor Dimitrov says he's unsure of competing at the US Open as he detailed the debilitating side-effects of catching Covid-19 . 19 Dimitrov recorded a positive test in late June shortly after playing at an Adria Tour tournament in Croatia, an event organized by Novak Djokovic that was widely criticized after several players -- including the world No. The Bulgarian has since returned to the court, competing at the Ultimate Tennis Showdown (UTS) in France last weekend where he lost to Feliciano Lopez and Richard Gasquet. Grigor Dimitrov competes at the Adria Tour in Belgrade, Serbia, in June. JUST WATCHED Djokovic 'deeply sorry' for Adria Tour after Covid-19 positive test Replay More Videos ... MUST WATCH Djokovic 'deeply sorry' for Adria Tour after Covid-19 positive test 01:52"A lot of things are going through your head.

Source: CNN July 28, 2020 09:11 UTC