(Not Mo. But potentially just as good. Courtesy of Getty Images)
For the better part of the last 2 decades, any talk about the Yankee bullpen began and ended with Mariano Rivera. No matter the combined skill and depth of the other 6 relievers in front of him, having Mo there for the 9th inning was the great equalizer, the 1-man advantage that no other team could compete with. 2013 was the final season of Mo's reign of terror over the rest of the American League and the Yankees embark on the start of a new bullpen era this season with Mo's successor assuming the 9th inning throne.
Mo was not the only major loss from last year's bullpen. Recent mainstays like Boone Logan and Joba Chamberlain have also moved on, and the Yankees enter this season far less settled in their relief role definition and hierarchy than they've been in quite some time. The potential is there for this group to be every bit as effective and occasionally dominant as the last group was. It's a matter of seeing who steps up, who falters, and how everything eventually shakes out.