Benn tore a ligament in his left knee during last Sunday's 38-15 victory over the Seattle Seahawks. The second-round draft pick started eight of 14 games, finishing with 25 receptions for 395 yards and two touchdowns.
Worthington signed with Tampa Bay's practice squad in November. He was the Pittsburgh Steelers' seventh-round pick in the draft.
Copyright 2010 by The Associated Press