Draft's most underrated prospects

Terrance Williams was a very productive wide receiver during his Baylor career. Jerome Miron-USA TODAY Sports

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Overrated prospects | Underrated prospects | Value picks

In many cases, the excitement surrounding the NFL draft ends up building a player's value well past the level that it should be.

Even though that trend tends to be the prevalent one, there are always more than a few instances in which, for whatever reason, a player does not get quite the pre-draft push that his metrics and physical skills indicate he should be getting.

Here are five NFL draft prospects who are underrated:

Terrance Williams, WR, Baylor

Reason undervalued: Age and 40-yard dash time

Williams was the surprise winner of a recent study I did for ESPN Insider reviewing nine of the top wide receiver prospects in the 2013 NFL draft.

He topped the group in the overall yards per attempt (YPA), vertical yards per attempt (VYPA, which measures productivity on passes thrown 11 or more yards downfield) and stretch vertical yards per attempt (SVYPA, which gauges production on aerials thrown 20 or more yards).