WOLVERINESMichigan football holds open practiceMichigan coach Jim Harbaugh thanks fans for attending a preseason open practice session held by the Wolverines at Michigan Stadium in Ann Arbor, Mich., Sunday, Aug. 26, 2018.Tony Ding, APMichigan quarterback Shea Patterson (2) steps over a hurdle during a preseason open practice.Tony Ding, APMichigan head coach Jim Harbaugh walks the field during a preseason open practice session.Tony Ding, APMichigan quarterback Shea Patterson (2) throws a pass while watched by head coach Jim Harbaugh, left.Tony Ding, APAn overview of Michigan Stadium after a preseason open practice session.Tony Ding, APMichigan quarterback Shea Patterson (2) and running back Karan Higdon (22) run through a handoff drill.Tony Ding, APMichigan head coach Jim Harbaugh, bottom left, greets fans with his players as they leave the field.Tony Ding, APMichigan quarterbacks Dylan McCaffrey (10), Shea Patterson (2) and Brandon Peters (18) stand during a break.Tony Ding, APMichigan head coach Jim Harbaugh, center, walks the field as players jog around him.Tony Ding, APMichigan quarterbacks Shea Patterson (2) and Dylan McCaffrey (10) warm up with arm stretchers.Tony Ding, APMichigan quarterback Brandon Peters (18) throws a pass during practice.Tony Ding, APMichigan quarterback Shea Patterson (2) throws a pass.Tony Ding, APMichigan quarterbacks Dylan McCaffrey (10), Shea Patterson (2), and Brandon Peters (18) stand together during a break in the practice.Tony Ding, APMichigan quarterback Shea Patterson (2) takes his helmet off during practice.Tony Ding, APMichigan quarterback Dylan McCaffrey (10) throws a pass.Tony Ding, APMichigan quarterback Shea Patterson (2) throws a pass.Tony Ding, APMichigan head coach Jim Harbaugh, top right, address his team at the end of the practice.Tony Ding, AP