CBSSports.com Combine preview: Beware workout results, remember the tape.

[cowboyjoe]

http://www.cbssports.com/nfl/draft/s...ember-the-tape

Buyer beware: Be cautious of great 40 times and other numbers for these players; their play on the field has not been consistently good enough to count on them to be NFL stars.
DE/OLB Dontay Moch (Nevada) His junior day workout last spring caused ripples through the scouting community, when he allegedly ran the 40 in the mid-to-high 4.2-second range. And although Moch's quickness is undeniable when watching his tape, scouts wonder about his motor, pass-rush moves and ability in coverage as a stand-up 3-4 linebacker. A team might reach for him in the second round, but it is not unreasonable to believe he could still be available in the fourth.

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WR Ricardo Lockette (Fort Valley State)
Lockette won a Division II national championship in the 200 meters in 2008, and could challenge the 4.3 mark in his 40. That speed and quickness generally translates to the field, but his inexperience, multiple transfers, and extremely inconsistent hands might prevent him from utilizing that speed to its fullest. A mid-round prospect in theory could end up undrafted because of those factors.

No stopwatch -- just watch the tape: If you have questions about the ability of these prospects to play at the next level after the combine, do what teams do: go back to the tape.
OG/OT James Carpenter (Alabama)
"Carpenter" is an appropriate surname for the Tide two-year starting left tackle. His hard work on the field impresses scouts much more than any numbers he'll produce in Indianapolis. Lined at guard or tackle at the next level, his strength at the point of attack and consistent effort make him a legitimate third-round pick.