When was Christopher made?
I think it was during season 3, but it might have been during season 2. The focus of the episode was college football gambling: after being made, Christopher was having difficulty making the nut he owed Paulie Walnuts, and Paulie was giving him hell for it. It was the episode where Chris caught Paulie taking a surreptitious sniff of Adrianna's, uh, intimate apparel.