After more than 35 years as the go-to metric for college basketball, the Ratings Percentage Index (RPI) is being replaced.
On Wednesday, the NCAA announced that they’ve created a new rating formula that will take the place of RPI as the primary tool for the NCAA Selection Committee.
The old system was easy to figure out. It was a mathematical equation that added the following:
- Team winning percentage (x 0.25)
- Opponents’ winning percentage (x 0.5)
- Opponents’ opponents’ winning percentage (x 0.25)
It’s a formula that anybody could use, but it left out a lot of key details, such as home/neutral/away games and strength of schedule.