1. What is RPI in College Baseball?

The Rating Percentage Index (RPI) is a quantitative ranking system used by the NCAA to evaluate teams based on their win-loss record and strength of schedule. It's a key metric in selecting teams for postseason tournaments and seeding.

2. How is RPI Calculated?

The RPI formula consists of three components:

Where:

• Win Percentage (25% weight) - Your team's winning percentage
• Opponents Win Percentage (50% weight) - The combined winning percentage of all teams you've played
• Opponents' Opponents Win Percentage (25% weight) - The combined winning percentage of all teams your opponents have played

Note: All percentages should be entered as decimals between 0.000 and 1.000 (e.g., 0.750 for 75%).

3. Importance of RPI in College Baseball

Details: The NCAA Selection Committee uses RPI as one of several tools to evaluate teams for at-large bids and seeding in the NCAA Tournament. A higher RPI generally indicates a stronger resume, considering both team performance and schedule strength.

4. Using the Calculator

Tips:

• Enter your team's winning percentage as a decimal (e.g., 0.750 for 75%)
• Calculate opponents' win percentage by averaging all opponents' records
• Calculate opponents' opponents' win percentage by averaging all opponents' strength of schedule
• All values must be between 0 and 1

5. Frequently Asked Questions (FAQ)

Q1: Why is opponents' win percentage weighted more heavily than team win percentage?
A: The 50% weight on opponents' record emphasizes strength of schedule, rewarding teams that play tougher competition.

Q2: What is considered a good RPI in college baseball?
A: Generally, an RPI above 0.600 is strong, while top teams often have RPIs above 0.650. Tournament-bound teams typically need at least 0.550.

Q3: How often is RPI calculated during the season?
A: The NCAA releases official RPI rankings weekly during the season, typically starting about one month into the season.

Q4: Does location of games affect RPI?
A: The basic RPI formula doesn't account for game location, but the NCAA Selection Committee may consider this separately when evaluating teams.

Q5: Are there any adjustments to the RPI formula?
A: Some versions give extra weight to road wins and home losses, but the NCAA's primary RPI uses the standard formula shown here.