View details for Improvement Rate

Improvement Rate is the percent chance that a hitter's EqR/27 or a pitcher's EqERA will improve *at all* relative the weighted average of his EqR/27 or EqERA in his three previous seasons of performance. A player who is expected to perform just the same as he has in the past will have an Improvement Rating of 50%.

Improvement Rate appears in the following BP Glossary Categories:

• Offense
• PECOTA
• Sabermetric