I searched for a thread on the Red Sox closer but didn't see a recent one so I'll kick this one off with an article from iayork about his prospects for the 2017 season by looking back at his historical pitch usage and locations.
iayork also wrote about his repertoire last week.One reason for this increase in walks is that Kimbrel has changed the location of his curve in the past couple of years, especially to right-handed batters. Whereas from 2010 through 2014, right-handed batter saw curves that clustered precisely at the bottom edge of the strike zone, in 2015 and 2016 his curves have tended to fall down and outside of the zone