Daniil Medvedev pulls out of Monte Carlo Masters after Positive Covid-19 test

World No. 2 tennis player Daniil Medvedev of Russia has pulled out of the Monte Carlo Masters following a positive Covid-19 test on Tuesday.   Even as the 25-year-old Medvedev has been moved into isolation, two other champion players, Rafael Nadal and Novak Djokovic, face worrying times ahead as they both encountered the Russian.