FanGraphs added an interesting new metric that stemmed from Jeff Zimmerman’s anti-save rant. That’s what is cool about the sabermetric community. They solve problems together, and then Appelman comes along and puts these stats on the site for everyone to enjoy.
The stats are shutdowns and meltdowns, and they are a win probability based stat. The value for a shutdown or meltdown when a reliever accumulates greater than or equal to 0.06/-0.06 WPA in any individual game. In other words, they improve or blow the chances of their teams winning by at least 6%.
Here’s how the Cardinal relievers stand at the moment.