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Mary Carillo: Athletes like Djokovic think 'science is just another opinion'
NBC Sports' Mary Carillo joins Chris Jansing as the world's sports organizations wrestle with how to proceed in the midst of the pandemic. Carillo, citing tennis player Novak Djokovic's COVID-19 diagnosis following a tournament he hosted, says the player has gone from the top of his game to "nothing but unforced errors"