And he didn't have a bad first year on varsity either.
"Individually I ran pretty well," said Pettaway, who stands at 5-foot-11, 195-pounds. "I ran for over 1,400 yards, 17 touchdowns, so I think I did pretty good for my first season. I still think I need get some more speed. I just t get a little faster."
"It's really MSU and Michigan right now," Pettaway said on recruitment. "Those are my main two colleges that are recruiting hard."
Pettaway says he would like the get back to Michigan's campus in the near future, and when he does, he wants to see how they improved after a disappointing 7-6 season in 2013.
"Well, I really want to see how the team is reconstructed," Pettaway said. "Last season, it was kind of disappointing for me. I thought they had a real good squad, and they could have done way better than they did. I want to see how they practice and how they have better themselves as a team."
With U-M's hiring of offensive coordinator Doug Nussmeier from Alabama, Pettaway admits he is "intrigued" by the hiring and wants to see what Nussmeier does with the run game this upcoming season.
"I want to know how he can make the offense better with the weapons he has on offense," Pettaway said on Nussmeier. "Cause I know at Alabama he had a really good running team and maybe he can help Michigan become better."
But when it comes to Michigan's in-state rival MSU, Pettaway made no secret on his feelings for the Spartans.
"I like Michigan State a lot," Pettaway said. "They have team spirit. I went up there for the Michigan-Michigan State game. After that win it was just wild in that locker room. I like their atmosphere and their defense – I'm loving it."
As far as what Pettaway is looking for on his campus visits, he said being around a "family" type atmosphere is important in his recruitment.
"Just make sure the players and the coaches are all as one unit," Pettaway said. "Not everyone has different egos, everybody comes together to play as a team. And at the end of the day, we're still family."