Behind today's door we find...Mitch Stetter!
While he struggles a bit with walks (41 unintentional passes in 75.1 career innings), Stetter has quietly cemented himself in the Brewers' LOOGY role, and shown flashes of brilliance while doing so. Consider this stretch, from May 27 to July 8 of last year, where Stetter went 17 outings (14.2 IP) without allowing an earned run, while striking out 24.
Because he pitches primarily to lefties, though, Stetter's outings are typically short. Through his first 107 outings as a Brewer, Stetter has pitched just 75.1 innings, averaging out to roughly .7 innings per appearance. That's the third lowest total ever among Brewers with at least 100 appearances: