Former USFL safety who was the property of the Saints when the spring league folded. The Bucs traded a 3rd round pick to the Saints prior to the 1985 season to acquire his rights, and Greenwood played the entire 1985 season with the Bucs starting 10 games. The toll of playing almost two straight seasons took its toll and he did not make the 1986 roster. Played for Michigan and Oakland in the USFL doubling his safety duties with the punting role too. Spent part of 1986 with the Packers and 1988 with the Raiders after leaving the Bucs. Recorded nine interceptions over his three years in the rival league.