Sluggish No. 7 Michigan beats Middle Tennessee 40-21

Middle Tennessee quarterback Asher O'Hara throws a pass in the fourth quarter of the team's NCAA football game against Michigan in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Michigan quarterback Dylan McCaffrey (10) celebrates his rushing touchdown during the third quarter of the team's NCAA football game against Middle Tennessee in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Michigan quarterback Shea Patterson (2) runs past Middle Tennessee linebacker Chris Melton (32) in the first half of an NCAA college football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Michigan wide receiver Nico Collins (4) celebrates his touchdown with quarterback Shea Patterson (2) during the second quarter of an NCAA football game against Middle Tennessee in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Tony Ding)

Middle Tennessee wide receiver Jimmy Marshall (83) rushes for a touchdown during the fourth quarter of the team's NCAA football game against Michigan in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Michigan wide receiver Ronnie Bell (8) breaks the tackle of Middle Tennessee safety Decorian Patterson during the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Michigan running back Zach Charbonnet (24) avoids Middle Tennessee safety Jovante Moffatt (7) to rush 40 yards during the fourth quarter of an NCAA football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Middle Tennessee wide receiver Jarrin Pierce, left, catches a pass as Michigan defensive back Jaylen Kelly-Powell (16) defends during the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Michigan defensive lineman Aidan Hutchinson (97) tries to wrap up Middle Tennessee quarterback Asher O'Hara (10) during the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Michigan quarterback Dylan McCaffrey rushes for a touchdown during the third quarter of an NCAA football game against Middle Tennessee in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

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)

Middle Tennessee safety Jovante Moffatt (7) knocks the ball from Michigan tight end Sean McKeon (84) for an incomplete pass during the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Middle Tennessee quarterback Asher O'Hara throws a pass in the fourth quarter of the team's NCAA football game against Michigan in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Middle Tennessee wide receiver Jimmy Marshall (83) rushes for a touchdown during the fourth quarter of the team's NCAA football game against Michigan in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Michigan won 40-21. (AP Photo/Tony Ding)

Michigan tight end Sean McKeon (84) runs with a 28-yard touchdown reception during the first half of an NCAA college football game against Middle Tennessee in Ann Arbor, Mich., Saturday, Aug. 31, 2019. Middle Tennessee's DQ Thomas is at right. (AP Photo/Paul Sancya)

Middle Tennessee quarterback Asher O'Hara dives for a 18-yard touchdown run in the first half of an NCAA college football game against Michigan in Ann Arbor, Mich., Saturday, Aug. 31, 2019. (AP Photo/Paul Sancya)

Michigan quarterback Dylan McCaffrey runs the ball in 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)