At Iowa, Greg Mattison went from coach to dad 

November, 3, 2011
11/03/11
1:51
PM ET
Greg Mattison sat in the stands at Kinnick Stadium, the Michigan defensive coordinator with nothing in his control and his son playing on the field.

Yes, Mattison has coached in Kinnick before, but his memories aren't about that. They are instead about the five years his son, Bryan, was a defensive lineman for the Hawkeyes under Kirk Ferentz.

"I just, I really respect him, really respect their program," Mattison said. "Any time you allow your son to go somewhere, you have to have a lot of faith in them. His experience there couldn't have been better. It was a tremendous fit for him."
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