From now until the end of the season College Baseball Lineup will publish the weekly DI Rating Percentage Index (RPI) and Strength of Schedule and DI Regional Rankings on the website.
The RPI is widely accepted as one of the most accurate, unbiased measures of a team’s ability. Three factors contribute into calculating a team’s RPI. The calculation is measure by combined values from a team’s winning percentage, their opponent’s winning percentage and their opponents’ opponents’ winning percentage. The first and third value each comprise ¼ of the RPI and the second quotient, the opponents’ winning percentage, makes up the remaining half. For the College Baseball Lineup calculation only games played against DI competition are considered.
A team’s Strength of Schedule is simply their opponents’ Winning Percentage – the same as the second part of the RPI calculation.
The DI Regional Rankings are a unique calculation using a team’s RPI as a basis and generated by the secret College Baseball Lineup WOPR computer housed in an underground bunker beneath the former Rosenblatt Stadium. The Rankings are computer generated and impartial and include factors such as home field success, margin of victory and current winning/losing streaks. Like with the RPI, only games against DI opponents are used in the calculations. The regions are broken down by a schools home state into the following geographic areas:
- Midwest: ND, SD, NE, KS, MN, IA, MO, WI, IL, MI, IN, OH
- Mid-South: WV, KY, TN, AR, MS, AL, LA
- Northeast: ME, NH, VT, RI, MA, NY, PA, MD, NJ, CT, DE, DC
- Southeast: FL, GA, SC, NC, VA
- Southwest: OK, TX, NM, UT, AZ, WY, ID, MT, CO
- West: WA, OR, CA, NV, HI, AK
The rankings will be update no less than weekly and can be found here: RANKINGS