A big reason why the Pittsburgh Pirates were successful last season was due to their pitching staff, and more specifically, the depth of their staff. Every time a starting pitcher went down, someone was there to step in and keep the team afloat.

The depth in 2014 has also been strong, although the story isn't exactly the same for the guys that are being replaced. The Opening Day rotation included Francisco Liriano, Gerrit Cole, Wandy Rodriguez, Charlie Morton and Edinson Volquez. The final two starters have been with the team all year. The first three starters have needed depth options to replace them at times. And none of those options have done that well.

Wandy Rodriguez was horrible in his time with the Pirates this year. Francisco Liriano has struggled, although his xFIP suggests...

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