He was a talented pass rusher who was among the NCAA leaders in quarterback sacks during his junior and senior years.
In spite of his collegiate success, Mitchell was not selected in the NFL draft because of concerns over his lack of bulk and ineffectiveness in coverage.
His Saints career was highlighted by a 2000 season where he recorded 6.5 sacks, had 2 defensive touchdown returns, and was named to the Pro Bowl.
Mitchell's role had been similar as a college player, where he saw most of his success utilizing his great speed as a blitzing outside linebacker.
In 2001, Charlie Clemons replaced Mitchell as the Saints' rush end linebacker, producing a team-leading 13.5 sacks and an interception.