But the height factor did not prevent him from challenging his older brother in a game of one-on-one. The smaller and much weaker Booker brother at the time continued to challenge his older brother in hopes of getting better and maybe one day becoming the All-ACC caliber player Trevor is at Clemson.
"I got better playing him because growing up he was better and that made me a better player playing against him," Devin said. "As I got older, it became real good competition because I got taller and I was close to the same height, but he was still stronger than me so take that into consideration."
And that's why right now Devin believes Trevor might be just a little bit better, but he hopes to change that soon.
"Me and Trevor have a lot of similarities, but there are also a lot of things that we do that are different," he said. "Yeah, he is bigger and stronger and all, but I'm working on my muscles and trying to get bigger and stronger.
"He is doing real good in college and I'm trying to get on that level."
At Union County High School the last four years, Devin was definitely on another level. The all-state and Region Player of the Year ended his high school career a few weeks back as the Yellow Jackets all-time leader in scoring (1,514 points), field goals made (600), free throws made (292) and free throws attempted (477).
To sum it up, Devin was a scoring machine.
"I think I was a little better than Trevor than he was when he was in high school," Devin said. "I was more of a scorer than he was, but rebounding we were both about the same."
In fact, the 6-foot-8, 225-pound post player ended his senior year at Union by averaging 25 points, 13.7 rebounds and 3.5 blocks per game as the Yellow Jackets finished second in their region and advanced to the second round of the Class AAA State Playoffs. Union finished the season with a 17-9 record.
"I think we did pretty well as a team," Devin said. "We could have gone further, but there were a few things we could have done differently. As for me, I went out there every game and gave it all that I had.
Devin definitely did all he could. He set the school's single-season mark for scoring with 650 points. He made a school record 250 field goals, while hauling down 356 rebounds. He also tied the school record for points in a game with 41.
"You can expect a lot of things from me at Clemson," he said. "I'm working hard and I'm trying to work on my guard skills so I can be a post/guard, so the post players will have a hard time guarding me.
"I'm working on my foot work and I'm trying to get better at the wing."
He is also working on his ball-handling skills as he does a lot of two-ball dribbling and left- and right- hand sprints.
"My ball handling skills are alright, but they can improve and that is what I'm working on," he said.
Devin says Clemson coach Oliver Purnell expects to use him at power forward or at center when he gets to Clemson next fall, but he says that could change depending on how he progresses over the next sixth months.
As for playing with his brother, depending on whether or not Trevor decides to turn pro, Devin is looking forward to the opportunity, while helping take the Tigers to greater heights than what the program already has experienced the last two seasons.
"It is going to be a sight to see," Devin said. "But I can't depend on him for what I want to do at Clemson. I have to step up my game and work hard and just go out there and play hard."
And as for working his way into the lineup so he can play alongside his brother goes, Devin says he has his work cut out for him, especially with the improved play of sophomore Jerai Grant over the last several months.
"Jerai has been playing good when he is getting in the game and he has two more years so I know he isn't just going to let me come up there and take his spot," Devin said. "I'm going to have to earn it and I'm going to do all I can to earn his spot."
Just like he did when he was growing up and playing his older brother one-on-one.
"I'm a little stronger and I can beat Trevor now," Devin said.