RELIEVERS: Using Leverage Index
Apr 16 2013
This week, this column looks at early returns on Leverage Index in a few pens. Leverage Index (LI) was developed by Tom Tango and measures the amount of swing in the possible change in win probability indexed against an average value of 1.00. So relievers who come into games in various situations create a composite score around 1.00. If the average score for a reliever is above 1.00, then that reliever's manager is showing greater confidence in them to win games than those with an average score below 1.00.
LI is a fantastic tool for many reasons. One is to see a developing usage pattern for particular relievers in a given pen. For example, some pens will have a left-hander who often faces left-handed batters with large numbers of...
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