Michael Phelps: 2021 Olympics will be ‘four or five’ out of 10 in terms of being clean

Swimming legend Michael Phelps, who retired as the most decorated Olympian in history in 2016, is not holding out much hope for a clean Olympic Games in Tokyo in 2021.

Swimming legend Michael Phelps, who retired as the most decorated Olympian in history in 2016, is not holding out much hope for a clean Olympic Games in Tokyo in 2021.