Why is 54urlacher wearing Mike Singletary's jersey in his Rookie Retro Insert from Fleer in 2000? Brian joined us as our first-ever guest on Ludex's Cardboard Conversations, so get the full story + other hot takes from this NFL Hall of Famer on our YouTube channel: link in bio. #thehobby #footballcards #whodoyoucollect #nfl #sportscards #urlacher #cardcollector #ludex