thenemindex.blogspot.com/2018/09/iowaha…
1. Each P5 team + Notre Dame start with 200 marbles; other FBS teams start with 100 marbles; non-FBS teams start with 0 marbles
2. win at home, take 20% of opponent's marbles; win on the road, take 25%
Example: OU plays Texas at neutral site. Current marbles OU 358, Texas 283.
If OU wins, new marble count will be OU 415, Texas 226
If Texas wins, it will be OU 286, Texas 355