Yesterday, Andy Pettitte took the next step towards shaking off the considerable rust that grew on his left arm since his retirement following the 2010 season, making his first major league start in 2012.
Pettitte, who many believed was nothing more than an extra arm for the Yankees when they announced his signing, is now an integral part of their playoff hopes—and to that end, the Yankees hope that Pettitte can play spoiler against the rest of the American League.
While yesterday was a positive step in the right direction for Pettitte, there's no guarantee that he'll re-discover his All-Star form, nor is there any guarantee that his arm will hold up to the rigors of pitching every fifth day once again.
Around baseball, this is sure to be a familiar refrain—what kind of performance can we expect from Player X as the season progresses? Will he actually perform at all?
Lets take a look at six players who could all be cast in the role of Player X—the wild cards of the 2012 season.