A "high-upside guy" is a tremendously gifted athlete who's relatively new to the game of football. Usually he thrived at the college level despite not knowing the in's and out's of the game. The thought is that, with some quality NFL coaching, a high-upside guy could have more impact than others at his position because of his natural talent.
Analysts tend to tag a lot of players as high-upside guys, but according to an NFL scout, the term is used sparingly by team personnel. That's because if a prospect gets drafted on the basis of that label but doesn't pan out, jobs could be on the line.
Examples: Jason Pierre-Paul, DE, New York Giants (15th overall pick, 2010 NFL Draft), Margus Hunt, DE, Southern Methodist University (2013 prospect – pictured above)
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