Big Ten's best defenses come out of spring in rebuild mode

Nebraska red team quarterback Casey Thompson (11) signals the sideline between plays against the white team during the first half of Nebraska's NCAA college football annual red-white spring game at Memorial Stadium in Lincoln, Neb., Saturday, April 9, 2022. (AP Photo/Rebecca S. Gratz)

FILE - Then-Miami head coach Manny Diaz encourages his team during the first half of an NCAA college football game against Duke, Saturday, Nov. 27, 2021, in Durham, N.C. Penn State, in the top 10 in scoring defense three of the last five seasons, has a new coordinator in Manny Diaz. The former Miami coach spent the spring fitting pieces together to compensate for the loss of as many as six players who could be drafted. (AP Photo/Chris Seward, File)

FILE - Ohio State defensive coordinator Jim Knowles shouts to his team during an NCAA college spring football game Saturday, April 16, 2022, in Columbus, Ohio. Coordinator Kerry Coombs was fired and Jim Knowles, who excelled as Oklahoma State's coordinator, was hired and began installing a 4-2-5 scheme. (AP Photo/Jay LaPrete, File)