Challange Archive question about football players

[Princeton]

I remember seeing a question about football players coming off the field. It was a relly hard probability question, and now I can't find it.
Does any one know it?

[jwinawer]

sorry. we'd need to know the date to look it up. but don't worry about it - i'm sure there is nothing about that problem that is critical to success on the gmat that cannot be learned from the official guide problems and our other materials. good luck!