"When will Mitch Keller arrive in Pittsburgh?"

That's the question that comes up every time we write an article about Keller, although we don't necessarily need to write about Keller for the question to come up.

Keller is the top prospect in the system, and a potential top of the rotation arm. The Pirates have gotten good results from their rotation so far, but Keller can definitely give them a boost, assuming he can make a seamless transition to the majors, which I think he can do. But will he have a shot at arriving in 2018, especially when he's starting the year in Altoona?

I'll first say that my answer to this question during Spring Training largely relied upon the idea that the Pirates could contend. During that time, it seemed unlikely that they could contend this year, with...

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