There's obvious grounds for discontent. The Diamondbacks' ERA increased by more than a run last season, going from 4.05 to 5.09, the team's ranking dropping from ninth to dead-last in the National League. And this was a team which made a specific point of addressing pitching last winter, signing the Cy Young runner-up in Zack Greinke, and another All-Star in Shelby Miller. Both pitchers were a pale shadow of theit 2015 selves, and were joined in the column marked "underwhelming" by many others: Patrick Corbin, Randall Delgado, Daniel Hudson all struggled at one point or another, even the vaunted Robbie Ray's ERA went up in 2016.
The retention of Mike Butcher
