Iowa offensive line coach George Barnett was not surprised that unit struggled a year ago. Despite having All-American center Tyler Linderbaum the line struggled with injuries and inconsistent play during the Hawkeyes’ 10-4 season.

Barnett says 10 of the 14 offensive lineman this spring have three or four years of eligibility remaining and several were forced into service last year at an early stage.

Barnett says the added experience will help in Iowa’s zone blocking scheme.

The Hawkeyes close out spring drills with an open practice Saturday in Kinnick Stadium.