How does the Big Ten play football without open campuses?

FILE - In this Dec. 28, 2019, file photo, Ohio State fans celebrate after a touchdown during the second half of the team's Fiesta Bowl NCAA college football playoff semifinal against Clemson in Glendale, Ariz. The goal is for all of major college football _ 130 teams in 10 conferences across 41 states _ to start a season at the same time and play an equal number of games. It is becoming more apparent the coronavirus pandemic is going to make that goal difficult to achieve. (AP Photo/Ross D. Franklin, File)

FILE - This March 7, 2014, file photo shows the entrance to The Big Ten Experience on the ground floor of the Big Ten conference headquarters in Rosemont, Ill. There are 130 major college football teams, spread across 41 states and competing in 10 conferences, save for a handful of independents. The goal is to have all those teams start the upcoming season at the same time — whether that's around Labor Day as scheduled or later — and play the same number of games. (AP Photo/M. Spencer Green, File)

FILE - In this Saturday, April 18, 2020, file photo, Gate 2 at Memorial Stadium is empty because the annual Red-White matchup was cancelled due to the coronavirus pandemic. The goal is for all of major college football _ 130 teams in 10 conferences across 41 states _ to start a season at the same time and play an equal number of games. It is becoming more apparent the coronavirus pandemic is going to make that goal difficult to achieve. (Francis Gardler/Lincoln Journal Star via AP, File)