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Gene J. Puskar/Associated Press

While Byron Jones captured the headlines, Adrian Amos quietly had the best complete workout of any defensive back. Likely a safety convert at the next level, his workouts were good for a cornerback too.

Though a 4.56-second 40-yard dash isn't stellar for a typical corner, it's a phenomenal score for a safety. More importantly, a 1.50-second 10-yard split is ideal for either position, and it was the best such split for safety converts at the combine. It also happens to be the case that for his height and weight (6'0", 218 lbs), it's faster than the average cornerback, and weight means a lot at the cornerback position.

Historically, 40-yard dash times and arm length—when normalized and combined—do a good job alone of predicting success. Amos' 32.25" arms and 4.56-second 40-yard dash are above-average for the class.

Beyond that, he did a good job of checking boxes—passing a series of filters that successful defensive backs also passed. In the case of a defensive back it means hitting the right speed at 10, 20 and 40 yards, having arms longer than 32 inches and putting together good explosion numbers for his size—all of which Amos did. In addition to that, solid agility numbers puts him in the right range, athletically, for a good investment.

On the field, moving back and forth between cornerback and safety didn't help Amos, though that wasn't his fault—secondary depth at Penn State was atrocious at times, and he did a better job than most at each position he was asked to play. It may be a reason his development at safety has a lot more to uncover than many think, too.

He displayed on-field speed with the best of safeties, playing not just with range but fluidity. He has excellent recognition of offensive passing combinations and plays disciplined and rarely out of position. Though his tackling is subpar and his angles are poor, there's a lot more room for coaching to fix this than many of the free safeties in this class who have issues against the run (for example, he's much more physical than Gerod Holliman). He possesses the right attitude but (wildly) incorrect technique.

His ability to play cornerback is a good plus for scheme versatility as well, and the Vikings shouldn't let the dazzling workout numbers of others overshadow the fantastic combine Amos had.