No. 17 Iowa looks to tighten things up vs. No. 10 Penn State

Michigan linebacker Cameron McGrone (44) sacks Iowa quarterback Nate Stanley (4) during the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Oct. 5, 2019. (AP Photo/Paul Sancya)

Michigan linebacker Jordan Glasgow, left, sacks Iowa quarterback Nate Stanley (4) in the fourth quarter of an NCAA college football game in Ann Arbor, Mich., Saturday, Oct. 5, 2019. Michigan won 10-3. (AP Photo/Tony Ding)

Michigan linebacker Cameron McGrone (44) celebrates his sack of Iowa quarterback Nate Stanley, bottom, in the fourth quarter of an NCAA college football game in Ann Arbor, Mich., Saturday, Oct. 5, 2019. Michigan won 10-3. (AP Photo/Tony Ding)

Penn State linebacker Micah Parsons (11) tackles Purdue running back King Doerue (22) in the first quarter of an NCAA college football game in State College, Pa., on Saturday, Oct. 5, 2019. (AP Photo/Barry Reeger)