FILE - In this Oct. 12, 2014, file photo, Pittsburgh Steelers strong safety Troy Polamalu watches from the bench in the second quarter of an NFL football game against the Cleveland Brownsin Cleveland. First-time eligibles Reggie Wayne and Polamalu are among 15 finalists for the Pro Football Hall of Fame's modern-day 2020 class. (AP Photo/David Richard, File)

FILE - In this Oct. 12, 2014, file photo, fans walk past food concession stands prior to an NFL football game between the Cleveland Browns and the Pittsburgh Steelers, in Cleveland. The crippling coronavirus pandemic has brought the entire world — including the sports world — to a standstill, and it shows no sign of going away anytime soon. The Associated Press found during interviews with more than two dozen experts in stadiums and infrastructure that the only thing that might look the same is what happens on the field of play. The most obvious change in the short term will be the implementation of social distancing. Lines at restrooms and concessions will be limited. Congregating in the corridors will no longer be allowed. (AP Photo/David Richard, File)