After Wandy Rodriguez was removed from the rotation last week, the question became "who is next?" The Pirates haven't been getting good results from their rotation this season, or their bullpen for that matter. Coming into the season, they looked good at the top three spots in the rotation, with Francisco Liriano, Gerrit Cole, and Charlie Morton leading the way.

Morton and Cole haven't been bad, but they haven't been great either. Cole has a 3.76 ERA and a 3.43 xFIP. Morton has a 3.29 ERA and a 4.23 xFIP. The biggest disappointment here has been Liriano, who has a 5.06 ERA, but a 3.58 xFIP that suggests he should be better going forward. Even if everyone pitches to their advanced metrics -- which would see a big improvement from Liriano, an improvement for Cole, and a decline for Morton...

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