I looked it up

My research was by no means exhaustive or comprehensive, but I glanced at bullpens over the past 10 years and found only 1 (the 2002 Atlanta Braves) that matches the ridiculous domination of Hermanson, Politte and Cotts.

I also rediscovered the existence of John "WAY BACK" Wasdin, and I'm happy to report that my childhood memories of him giving up way too many unfortunate home runs are supported by his lousy HR/9 inning ratios.