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Iowa Player Jack Kallenberger Retires From Football

Close-up view of Iowa footballs.

LINCOLN, NE - NOVEMBER 24: General view of footballs used by the Iowa Hawkeyes before the game against the Nebraska Cornhuskers at Memorial Stadium on November 24, 2017 in Lincoln, Nebraska. (Photo by Steven Branscombe/Getty Images)

An Iowa defensive line that was already slated to lose half-a-dozen players is about to lose yet another lineman.

According to 247Sports writer David Eickholt, Iowa defensive lineman Jack Kallenberger has decided not to play football in 2019 - effectively ending his college football career.

A junior, Kallenberger was not credited with any tackles or plays during his time at Iowa.

Per 247Sports, Kallenberger played junior college football at Iowa Central C.C. and was a walk-on with the Hawkeyes.

While Kallenberger's role at Iowa for 2019 is unclear, he is nonetheless a loss for an Iowa team that is finding itself increasingly strapped for defensive line depth.

Defensive linemen Parker Hesse, Matt Nelson, and Sam Brincks are slated to graduate. Anthony Nelson is leaving early to declare for the 2019 NFL draft. Brandon Simon and Garret Jansen have both announced intentions to transfer.

Defense was a critical component for Iowa finishing 9-4 in 2018.

The team finished with the No. 11 scoring defense in the league, allowing 17.8 points per game.

Iowa held two teams scoreless, and four teams under ten points. The team infamously blew out Illinois in a 63-0 rout on November 17, 2018.

The Hawkeyes went on to win the Outback Bowl in a 27-22 win over Mississippi State.