49ers NFL Draft Cheat Sheet: The athletic test the Niners value most when scouting DTs

San Francisco 49ers defensive end Arik Armstead, center, is congratulated by defensive end Nick Bosa, left, after sacking Green Bay Packers quarterback Aaron Rodgers (12) during the first half of an NFL football game in Santa Clara, Calif., Sunday, Nov. 24, 2019. (AP Photo/Tony Avelar)NEED: Pass-rushing defensive tackle, specifically a 3-technique that can slide to 1-technique in nickel sub-packages.

PROTOTYPE: High-motor. Explosive.

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LIKES: A player who is long, strong, and down to get the friction on.

The 49ers’ defensive line wants mix-and-match and stunt in its one-gap system. That means fielding guys who can play all across the line. For defensive tackles, it means guys who can…