Lowe Wren / Junior Wren

Summary: Pittsburgh traded quarterback Len Dawson to Cleveland for Preston Carpenter and Lowe Wren. Dawson later won Super Bowl IV with Kansas City and was inducted into the Pro Football Hall of Fame. Analysis: This is one of the most consequential misevaluations in NFL history. Len Dawson, unable to crack the Pittsburgh starting lineup, was moved for two journeyman players. He went on to become a Super Bowl champion, AFL Player of the Year twice, and a Hall of Famer. Preston Carpenter was a serviceable receiver, and Lowe Wren was a reserve defensive back — neither remotely comparable in career value. Grading this as a Pittsburgh Win (B+) is the single most inaccurate verdict in this database. Corrected to F for Pittsburgh, A+ for Cleveland.