Byron JonesSpeed kills in the NFL, and a fast 40-yard dash can mean a higher draft slot and increased salary for prospects.

With the help of Zach Whitman’s fantastic SPARQ metric, which measures a player’s athleticism using weight, forty-yard dash, ten-yard split, short shuttle, 3-cone drill, bench press, vertical jump, and broad jump, NESN.com compiled the best athletes in the 2015 NFL draft by position.

Oregon’s Marcus Mariota, the draft’s most athletic quarterback, likely would be drafted at the top of the first round regardless of his testing times, while a player like tight end Will Tye, from tiny Stony Brook University, could go from being an undrafted free agent to a late selection because of his measureables.

Check out the best athletes in the 2015 NFL draft>>

Thumbnail photo via Brian Spurlock/USA TODAY Sports Images