"We took some steps in the right direction from the physical aspect, and that is my biggest concern right now," Fulmer said. "We really won't know all about our football team until we get the guys who are injured back out there and get our freshmen and junior college guys in.
"But we have to make significant progress from a physical standpoint in the defensive front and the offensive front before we leave spring practice."
Tennessee is replacing two starters on the offensive line in Arron Sears and David Ligon, as well as three who started games across the ball on defense in Turk McBride, Matt McGlothlin and Justin Harrell.
"Everything we did today except for a couple of areas was geared toward making progress at those positions. We had some response, but the problem is we have some youngsters who really don't yet understand what it takes to play in the Southeastern Conference.
"We can talk about it all we want but until they actually experience it, they're not going to know."
Saturday's scrimmage marks the end of Tennessee's second of five practice weeks. The EdAmerica Orange and White Game is set for March 31 at 2 p.m.