Wide receiver Brian Robiskie re-signed with the Lions for the start of off-season workouts today, a week after he was released by the team. Robiskie appeared in six games and caught four passes with the Lions after signing as a mid-season injury replacement last year. The Lions currently have 13 receivers under contract and are in the market to add a legitimate outside threat early in the draft to play opposite Calvin Johnson. They've hosted USC's Robert Woods and Tennessee teammates Cordarrelle Patterson and Justin Hunter on pre-draft visits, and have a visit scheduled with West Virginia's Tavon Austin on Tuesday and Wednesday. Johnson broke Jerry Rice's single-season receiving mark with 1,964 yards last year, but was often the Lions' only real weapon in the passing game. Nate Burleson and Ryan Broyles are coming off season-ending injuries, and Mike Thomas had a minimal impact after being acquired in an off-season trade.