Peppers would finish with four tackles, two solo, including a 1.5 tackles for loss playing mostly out of the nickel position for the Maize defense.
You saw his speed. You saw his physical play. You saw his ability to break on the ball with one pass break up.
All that being said, does Peppers have the "it factor" to lead this Michigan defense?
"That 'it factor' being he's a good football player," Harbaugh said, when posed the question on Peppers. "He's a good football player. He's been A-plus. He really has all spring. He's just out there taking reps."
Harbaugh then gave an example of how his star defensive back puts in the extra work in practice.
"A lot of times a guy would get in front of a drill, which he would do," Harbaugh said. "He would go through the repetition of the drill, and then I would see up at the front again - and again.
"Hey, it's like 'Hey, come on, Jabrill Peppers isn't taking every rep in these drills?' But that's the kind of youngster he is. He's brought great energy and enthusiasm for the game. His play has been very good. It means a lot to me he wants to keep getting better and better."
That was even more evident when Harbaugh said Peppers still wanted to participate in practice, even after having a minor dental procedure done earlier this spring camp.
"He only missed one day of spring practice," Harbaugh said. "He had to get a tooth out. He did everything he possibly could to practice that day. So, yeah, you start to fall in love with guys like that."
Michigan plays its next game at Utah on Sept. 3.