FILE - In this Oct. 19, 2019, file photo, Iowa head coach Kirk Ferentz talks with Purdue head coach Jeff Brohm, right, before an NCAA college football game in Iowa City, Iowa. Purdue offensive coordinator Brian Brohm went through his usual practice routine this week. He met with his older brother, Jeff, about game planning and the initial play-calling script as he prepared for Saturday's long-awaited season opener against Iowa. Less than a week after the Boilermakers fourth-year head coach tested positive for COVID-19 and was forced into isolation for 10 days, it's the other Brohm taking charge this weekend.(AP Photo/Charlie Neibergall, FIle)

FILE - This 2020 electron microscope image made available by the National Institute of Allergy and Infectious Diseases shows a Novel Coronavirus SARS-CoV-2 particle isolated from a patient, in a laboratory in Fort Detrick, Md. The coronavirus pandemic was considered by many Big Ten coaches as the biggest opponent for conference teams coming into this virus-delayed football season, and it has been. (NIAID/NIH via AP, File)

FILE - In this Nov. 7, 2020, file photo, Maryland head coach Mike Locksley looks up from the sideline during the fourth quarter of an NCAA college football game against Penn State in State College, Pa. Locksley remains on lockdown, battling the coronavirus while the Terrapins prepare for their first game in three weeks without nearly two dozen players who tested positive for COVID-19. (AP Photo/Barry Reeger, File

Rutgers head coach Greg Schiano looks on in the first quarter of an NCAA college football game against Indiana, Saturday, Oct. 31, 2020, in Piscataway, N.J. (AP Photo/Corey Sipkin)

FILE - In this Saturday, Nov. 7, 2020, file photo, Maryland head coach Mike Locksley, center, talks with his players during a timeout late in the fourth quarter of an NCAA college football game against Penn State in State College, Pa. An outbreak of COVID-19 on the Maryland football team that resulted in a positive test for head coach Michael Locksley has caused the cancellation of Saturday’s Big Ten game against Michigan State. (AP Photo/Barry Reeger, File)

Minnesota head coach P.J. Fleck has a discussion with referee Larry Smith and headline judge William McKoy during a break in action at an NCAA college football game with Michigan Saturday, Oct. 24, 2020, in Minneapolis. (AP Photo/Bruce Kluckhohn)

Wisconsin head coach Paul Chryst watches his team during the first half of an NCAA college football game against Northwestern in Evanston, Ill., Saturday, Nov. 21, 2020. (AP Photo/Nam Y. Huh)