Tony Diaz and Iowa's passing development face a tougher test

Iowa produced only 238 total yards against Ohio State and has averaged 2.56 yards per carry against Power Four opponents. Early turnovers, poor execution, limited rushing continuity and difficulty replacing three NFL-caliber offensive linemen have increased pressure on Tim Lester, while Hecklinski's relief work and Tony Diaz's development as a vertical threat are central storylines.