 Mitchell was ineligible for 2008's Brownlow Medal following a tripping charge in the match against Melbourne in round nine.On Saturday, 27 September, Mitchell captained the Hawks to the 2008 premiership, the first in 17 years and the club's 10th, beating the reigning premiers, Geelong, by 26 points.Mitchell was reported for rough conduct against Geelong's Gary Ablett, Jr. in the second quarter, however the report was dismissed at the conclusion of the weekend.