I see guys talk about them, but I've never played one. Don't you just choose your teams, and if it's say a 3 teamer, pick like Colts/Cowboys/Open? I think there's also a time limit to fill your open slot.
LOL, look what I found researching this for you after I posted the above. Actually, this was the first thing that popped up on google. http://www.madjacksports.com/forum/showthread.php?t=170117 You've had these thoughts before, I guess, lol??