No. 7 Michigan hopes it is prepared for Army's triple option

FILE - In this Sept. 22, 2018, file photo, Army quarterback Kelvin Hopkins Jr. (8) carries the ball past Oklahoma defensive lineman Neville Gallimore (90) in the first of an NCAA college football game in Norman, Okla. Army opens its season on Friday night, Aug. 30, 2019 against Rice riding a 13-game winning streak at Michie Stadium. (AP Photo/Sue Ogrocki, File)

Michigan coach Jim Harbaugh argues a call during the second half of the team's NCAA college football game against Middle Tennessee in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)