Nike re-signed Philadelphia Eagles quarterback Michael Vick to an endorsement deal Friday, nearly four years after dropping him amid his legal troubles. Nike, which signed Vick as a rookie in 2001, terminated his contract in August 2007 after he filed a plea agreement admitting his involvement in a dogfighting ring. Vick spent 21 months in prison. CNBC first reported the deal. Terms were not released. "Michael acknowledges his past mistakes," Nike said in a statement. "We do not condone those actions, but we support the positive changes he has made to better himself off the field." Read more: http://sports.espn.go.com/nfl/news/story?id=6730833