Tubman, one of the sleeper prospects statewide in the Class of 2014, made it to several football games last fall. But when he made an unofficial visit to campus earlier in the week, Tubman said he surprised coach Charlie Strong.
"I've grown a lot," Tubman said. "I walked in and coach Strong said, ‘Wow, you look like a total different person. When I was there for camp, I was 6-2 and 190 pounds. Now, I'm 6-5 and 225 pounds.
"I've been working hard with the weights and eating good."
Tubman, who has just been playing football for a bit over two years, had been playing linebacker but said he's "loving defensive end" since he switched to that position and that's the position he's getting looked at by colleges.
After a junior season with 45 tackles, Tubman is starting to get more college looks. U of L has been on him the longest and he will attend Junior Day at the school this weekend. He's also hearing from Kentucky and Western Kentucky.
But at this point, Tubman said he "really likes" the Cardinals.
"The coaching staff is really nice and engaging," Tubman said. "I want to learn more from there. I've talked to coach (Vance) Bedford and he said I am welcomed to stop by anytime, so I am going to go ahead and do so.
"I'm excited to go to Junior Day and see what they're talking about."
Tubman said he started playing his freshman year and "didn't even know how to play the game." He said he got a "little taste" of it as a sophomore and moved into a key role with the Red Hawks as a junior.
"I had hobbies but that was all before (he started playing)," Tubman said. "My strengths are my speed and skill. I have to work on my agility.
Tubman plays at Seneca for Lavelle Boyd, a former U of L player.