Adam Rittenberg reports on a coalition of Pac-12 football players who are threatening to opt out of the season over health and racial injustice concerns. (0:58)

Here's the latest on how the coronavirus is affecting sports -- more specifically, sports that have not yet fully resumed:

NFL

Training camps began on July 25 for the Texans and Chiefs and on July 28 for the remaining 30 teams, complete with social distancing and masks.

NCAA

A group of Pac-12 football players wrote a letter to the conference threatening to opt out of fall camp and game participation unless the league meets its demands with regard to safety during the coronavirus pandemic, as well as economic and social issues.