Mike Tircio forced to step away from Kentucky Derby coverage after sudden illness

Legendary NBC commentator Mike Tirico has revealed a 'significant reaction' to his nut allergy forced him to step away from the network's coverage of the Kentucky Derby on Saturday. Fans shared their concern for the 58-year-old's health before Tirico's NBC colleague Ahmed Fareed suddenly jumped in to take his place after a commercial break around an hour into the broadcast.