Which Teams Use Their Bullpens Optimally?

Teams with deep bullpens like the Royals, Yankees, and Orioles can stretch their success even further by using their resources in the most optimal manner. By correlating game context and reliever ability, they can conserve inning counts for each reliever and prevent fatigue and meaningless usage. The metric presented here attempts to quantify this usage, with the caveats of small sample sizes and the lack of quality interpretation.

NL Midseason Debuts: Prospects Looking to Make an Impact – #4 Robert Stephenson

The advanced metrics indicate that Robert Stephenson might indeed be growing into a great young pitcher, and continued success and development at AAA should earn him a spot in the big leagues this year.