Pitcher Wins Above Replacement
It is here.
For pitchers who pitched during the Retrosheet era. Thanks to Tom Tango of Insidethebook.com for providing win expectancy charts for calculating leverage index.
Starters and relievers are compared to different replacement levels. Replacement level considers ballpark, league, defensive support, and mix of opponents. Pitchers get partial credit for the situation leverage they pitch in. Click on the Stat Definition link from any player to see what goes into these pages.
And like the hitters, I have a top 300 list for the pitchers.