Not every successful major league player is a former top prospect. Typically, it’s the high-profile, high-ceiling players who typically garner the most hype as they ascend the organizational ladder.

One of the more rewarding aspects of scouting is identifying young players who, despite flying under the radar or underperforming early in their careers, have considerable room for improvement and showcase the potential to be impact players in the major leagues.

With that being said, here’s a look at seven prospects who will improve the most in 2015.

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