Iowa’s offensive line suffered a big blow on Wednesday afternoon.

Head coach Kirk Ferentz announced that offensive lineman Mark Kallenberg has decided against a return to the program and will forgo his fifth season with the Hawkeyes. His career ends after playing in 22 career games at Iowa.

“I’m ready to bring my college football career to a close and move on to the next chapter in my life,” said Kallenberger, in a statement. “I have enjoyed my four years as a Hawkeye. I will cherish the camaraderie with my teammates in the locker room and on the field. I want to say thank you to coach Ferentz and all the coaches who have helped me become a better player and a better person.”

Kallenberger played in six games for Iowa during the 2020 season, making four starts. He missed two contests due to injury. The Hawkeyes ended the year with a 6-2 record.

He will earn his degree this spring.

“Mark has worked extremely hard during his four years on our team,” said Ferentz. “He is a good player and person. We will certainly miss his presence on the field this season. I know he will take the lessons he learned as a Hawkeye and be successful in the future.”

In his final season with the Hawkeyes, Kallenberger earned All-B1G Honorable Mention recognition.