Arizona Diamondbacks manager Bob Melvin won’t say it, but closer Brandon Lyon’s leash just got a little shorter. The D-backs acquired All-Star closer Jon Rauch from the Washington Nationals for second baseman Emilio Bonifacio to bolster their worn out bullpen. Rauch will be in a setup role upon his arrival, but all that could change if Lyon, who has given up 7 runs in his last 2 appearances, continues to struggle.

It’s important to understand that Lyon’s recent hiccups and Rauch’s arrival in Arizona are two completely independent events. Lyon is still Melvin’s guy, and Rauch is a welcome addition to a bullpen mix that also includes setup men Tony Pena and Chad Qualls. Rauch becomes option No. 2 to work the ninth inning and could be in line for some saves when Lyon is unavailable. Read more »