NCAA DI/DII/DIII and NAIA Baseball RPI

Results are collected daily from ncaa.org and prestosports.com. If results are not correct, they may not have been uploaded to their source either timely or correctly.

Only games against other teams of the same division are included. For example if the St. Thomas Bobcats (NAIA) played against the Lynn Knights (NCAA DII) those results would not included for either school, nor are ties.

The tables should be automatically updated daily at approximately noon pacific time.

The links on the left side of the page display an interactive table with RPI, strength of schedule, win%, a quadrant breakdown and results ticker. The links on the right side provide a simple text files with less information. However the text results do include a listing of who is not included and the number of games they have played against the division at the bottom of each of the tables.

InteractiveText File
NCAA D-INCAA D-I
NCAA D-IINCAA D-II
NAIANAIA
NCAA D-IIINCAA D-III

Calculations:

Rating percentage index (RPI) – The current and commonly used formula for determining the RPI of a team at any given time is as follows: RPI = (WP * 0.25) + (OWP * 0.50) + (OOWP * 0.25)

Where WP is Winning Percentage, OWP is Opponents’ Winning Percentage and OOWP is Opponents’ Opponents’ Winning Percentage.

The WP is calculated by taking a team’s wins divided by the number of games it has played (i.e. wins plus losses).
Strength of Schedule (SOS) –  The SOS is where OR is the opponents’ record, while OOR is the opponents’ opponents record.
Quadrants – The number of total teams in each division is simply divided by four. Q1 are the top 25% of teams, and Q4 is the last 25%.