Having reached the halfway point of the 2013 minor league season, it’s not surprising that many of the game’s top young hitters have recently received a promotion to a more advanced level.

This list of promoted prospects features high-profile names such as Byron Buxton, Xander Bogaerts, Miguel Sano, George Springer, Eddie Rosario and Gregory Polanco. However, the most impressive player has been Phillies third baseman Maikel Franco. 

After posting a .925 OPS in the pitcher-friendly Florida State League to open the season, Franco, 20, was promoted to Double-A Reading late last week and is now 11-for-21 (.524) with two home runs and five RBI through his first five games.

Here’s a look at the rest of the hottest and coldest hitters at every minor league level.

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