You’ll recall earlier this year we introduced our very own reliever rankings called SOEFA, which you can read about in detail here. For a brief refresher, it combines inherited runner strand rate, expected OBP against, ERA-, and FIP- into a deviation from league average. This is a measure of performance, not necessarily ability, and seeks to provide a single number to judge relievers that balances context neutral and context dependent numbers. Certain pitchers, such as Craig Kimbrel, cannot be credited for stranding runners because they are never put into those situations. They are not penalized either, however. Additionally, SOEFA penalizes pitchers like Joe Nathan and Mariano Rivera who have done a very poor job when they have been asked to strand runners this season despite great numbers in other categories.

Zero is average, and will generally range between -2.5 to 2.5 with -1 to 1 being most common. This includes all pitchers who have thrown at least 20 IP in relief as of this morning, so the average score on this list is closer to 0.08 and the inherited runner threshold has been increased from 5 to 8. SOEFA is a rate stat not a counting stat. Should you wish to know the SOEFA for any other reliever, or on a day that isn’t Sunday, hit us on Twitter or in the comments section. Also, as we look to improve SOEFA for next season, let us know if you have any suggestions! Hope you enjoyed this project and look for some analysis of its success this offseason.