The Iowa defensive line may be highlighted by the rise of A.J. Epenesa, but the depth on the line is beginning to resemble a kiddie pool at this point. A unit that has already lost a few players to graduation, a few more to transfers and one player early to the NFL Draft now has a retirement to add to the list of offseason losses. Jack Kallenberger has stepped away from football, Iowa head coach Kirk Ferentz announced on Thursday during a season-wrap-up press conference with Iowa reporters.
Kallenberger, who transferred to Iowa in 2017 after two seasons of junior college football with Iowa Central Community College, is no longer listed on the Iowa football website’s roster page. His departure was a mild surprise given the opportunity to compete for a more vital role on the defensive line this spring. Kallenberger’s brother, Mark Kallenberger, remains on the team after completing his redshirt freshman season with the Hawkeyes.