Kyle Schwarber and Mookie Betts are the kind of phenoms who just aren’t playing around.

In 2015, the Chicago Cubs’ masher and the Boston Red Sox’s sparkplug demonstrated that they’re the type of players who have the tools—and who have drawn the praise of coaches and execs—to be more than just your run-of-the-mill stars.

Schwarber and Betts are among the cavalry of young position players ready to launch directly into the superstar stratosphere—the realm occupied by the likes of Bryce Harper, Miguel Cabrera, Mike Trout, Andrew McCutchen and Josh Donaldson.

For the purpose of this exercise, players had to have accumulated less than two years of big league service time to be eligible, but there was room for one guy who narrowly eclipsed that threshold. As it turns out, that future superstar happens to be a teammate of Betts.

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