Grube Power Index

  • Grube Power Index GPI Week 9

    Grube Power Index (GPI): USL Week 9

    Below is the updated Grube Power Index (GPI) through Week 9 of the USL season, courtesy of friend of the program Chad Grube. The GPI’s algorithm heavily weighs road results, which is perhaps its most distinguishable feature compared to more traditional formulas used to derive power rankings. Support Soc...