Lamar Jackson is leaving Louisville to enter the NFL draft, one season after becoming the youngest Heisman Trophy winner.
The 20-year-old junior quarterback tweeted Friday that he talked with his family before announcing the decision, which was confirmed by the school.
His decision was somewhat expected after he compiled some statistics that were better than those from his Heisman-winning numbers as a sophomore. He finished third in this year's vote.
Jackson thanked Cardinals coach Bobby Petrino, teammates and fans on Twitter. "It has been nothing short of an honor to be a member of #CardsNation and to play for this university."