How I Evaluate Each Position:
By Bill Walsh
PSX Draft Insider Special
Ideal size: 6-2, 290
Must have the girth, strength, ballast to hold off the guard, or to step into a tackles' block without being knocked off the line of scrimmage.
Quick, strong hands to grab and pull are critical. This is common with the great tackles. The hands, the arms, the upper body strength and then the quick feet to take advantage of a moving man, just getting him off balance.
You are looking for somebody who can move down the line of scrimmage and make a tackle, pursuing a ball-carrier. That would be lateral quickness in a short area, being able to get underway and move over and through people. If you get knocked off the line, or get knocked sideways or knocked off balance, you cannot play this position. You must be able to work your way through people, so that kind of strength is a must.
The best defensive tackles move the offensive guard back into the quarterback. They won't have nearly as many sacks as others, but if they can move the guard back into the quarterback, then the quarterback has to avoid his own lineman as if he were a pass rusher before he throws the ball. So this is a key ability.
Dana Stubblefield would be a good example of a guy who can weigh the guard right back to the quarterback.