May’s Most Dominant Relief Pitchers

Pierce Johnson
(Associated Press)

After some minor delays and procrastination, May’s Shutdown Percentage calculations are complete. As a reminder Shutdown Percentage (SD%) measures the overall dominance of a reliever which differs from previous statistics which primarily use starting pitching metrics to value bullpen arms. April’s results can be found HERE

While our top ten moved slightly, we saw major movement from team bullpens as a whole. The minimum number of innings to qualify was raised to 12 for this month. Here are the results for the month of May in the MLB. I am hoping we will not have to wait for mid-June next time around….


Written by Rex Hime