One of the best parts about MLB spring training is getting the chance to watch dark horses like Trayce Thompson and Aaron Sanchez, who will be angling to steal jobs from more-established teammates.

Surveying the bigs, there is an array of low-key guys like Thompson and Sanchez who don’t have the inside track to a regular gig but who have the potential to make it happen.

All of the players who cracked this list offer tremendous upside, and all but one posted superb numbers—either in the minors or the majors—in 2015. They’re all about to be embroiled in big-time position battles this spring.

In the case of Sanchez, he’s not only got the stats to back up his bid but also a vote of confidence from one of his higher-profile teammates.

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