The Ravens drafted Mark Clayton with their first round pick (22nd overall) in 2005 out of Oklahoma. In seven seasons, he had 260 catches for 3,448 yards and 14 touchdowns. The Ravens traded Clayton to the St. Louis Rams in 2010 but he injured his knee and was placed on injured reserve. He announced his retirement from the NFL in May, but he hadn't played an NFL game in two years prior to his announcement.
Doug Kapustin, MCT