Rodriguez was fired following Michigan's 2010 season, ending Michigan's flirtation with the spread—and with non-"Michigan Man" coaches. Rodriguez was succeeded by Brady Hoke, who served as Michigan's defensive line coach from 1995 to 2002. Hoke held head coaching positions at Ball State from 2003 to 2008 and San Diego State from 2009 to 2010 before returning to Michigan. Meanwhile, in Columbus, the Ohio State football program came under NCAA investigation in early 2011 for an incident in which several prominent players were discovered to have traded memorabilia for tattoos. Evidence surfaced that Tressel had known about the situation but had not reported it to school compliance officials, and that the abuses were more widespread and longstanding than originally reported. On May 30, 2011, Tressel resigned as head coach and former Buckeye player and assistant coach Luke Fickell was appointed interim head coach for the 2011 season. In July 2011, in response to the ongoing NCAA investigation, Ohio State vacated all wins from the 2010 season, including the win over Michigan, leaving Tressel with a final record against Michigan of 8–1, with a win streak of six.