Duke, 36, seemed like a nice free agent buy at a $2MM price point. He only carried a 4.15 ERA in 2018, but generally looked solid in most peripheral measures and dominated opposing lefties (.220/.283/.319).
Unfortunately, the bottom has fallen out in the veteran southpaw’s 15th MLB campaign. Duke’s typically double-digit swinging-strike rate has collapsed to 7.3% as his chase rate has plummeted to 23.5%. With hitters laying off of most everything out of the zone, Duke has fared quite poorly in the K/BB department with 18 apiece through 23 1/3 innings.
The Reds obviously ran out of hope of finding a solution, deciding instead to give a shot to the 25-year-old Herget. He was added to the 40-man over the winter but has yet to appear in the bigs. Through 37 2/3 frames this year at Triple-A, his second effort at the highest level of the minors, he’s carrying a 3.58 ERA with 10.5 K/9 and 5.7 BB/9.