Tonight we begin to separate Gregory Polanco as mythological figure from Gregory Polanco as Major Leaguer.

There has been plenty to mythologize. Polanco rocketed from relative anonymity, a raw youngster struggling to hit in the Gulf Coast League, to prospect superstar status faster than it takes him to run 1st to 3rd. A blastoff season in 2012 (.325/.388/.522) for low-A West Virginia put him on the Big League track. And high expectations for each new level were met and surpassed -- quickly.

"I didn't know it was going to be that fast," Polanco said after his arrival in Pittsburgh. "I worked hard, I played hard to be where I want to be."

The 6-foot-4 athlete with five-tool potential sharpened into the 6-foot-4 dynamo with five tools, period. Prospect chatter turned into prospect hy...

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