A versatile 5-foot-9, 185-pounder, he intercepted three passes as a cornerback last fall, then averaged 16 points per game for the Green Hornet basketball team. He ran the 100 meters, the 4x100 and 4x200 relays in track and says he may give baseball a fling next spring.
Caldwell clocked a 4.64 in the 40-yard dash at the UT camp but insists he's much quicker than that. He says he was clocked at 4.4 by Carter head coach Heath Woods and posted a 4.5 time May 12 at West High School's Division 1 Sports Media Day.
"Twenty-six different high schools were there," Caldwell recalled, "and I placed third overall."
The competition, he said, consisted of the 40-yard dash, vertical jump and assorted agility drills.
Although he was disappointed with the 40 time he posted at UT's camp, Caldwell found the experience generally rewarding.
"I really liked it," he said. "It was intense. There were a lot of good athletes there. The receivers were fast, big physical receivers, so I had to be more physical as a DB."
Caldwell also enjoyed chatting with several of Tennessee's players.
"I already met most of them," he said. "I talked to JaKouri Williams a little bit. Talked to Jonathan Hefney a little bit. Talked to Josh Briscoe. And I saw Erik Ainge, Arian Foster and LaMarcus Coker."
Caldwell and the other defensive back prospects were put through their paces by Larry Slade. Caldwell came away impressed with the Vol secondary coach.
"Coach Slade's real cool," he said. "I like him because he don't sugar-coat anything. He tells you how he wants it done. If you don't do it that way, he tells you to get to the back of the line and let somebody else do it."
Although Caldwell says he played "some receiver and running back" last fall, his favorite position is cornerback.
"I really like bump and run, getting physical with the receiver," he said. "Teams are always looking for the cornerback to make a big play or stop a big play. I like that. I like for the weight to be on my shoulders."
An All-Region 1, Class 3-A pick in 2006, Caldwell says the best part of his game is "being physical and using my speed."
He attended the Middle Tennessee State camp June 9, the UT camp June 16 and the Maryland camp June 24. He's planning to attend Mississippi State's camp on July 13 and Auburn's on July 14. He says he'll visit Alabama's camp "if time permits."
One thing's for certain: G'metrik won't be playing college ball at his father's alma mater. Greg Caldwell was a walk-on linebacker at East Tennessee State, which has since dropped its program.
Being a Knoxville native, G'metrik hopes to play for the hometown Vols someday.
"I'd love that, right here where my family would get to see me," he said. "I've always loved Tennessee football, ever since I was small."