It's seems that it doesn't matter what age you are, feeling the wrath of former Fresno QB is not something you can escape.
His brother believes that it will be this competitive edge that will set him apart in the NFL, and it's something that may give him an advantage over other first round draft prospects.
"He's crazy competitive. I know a lot of people say that, but he dunks on my 9-year-old," former overall No. 1 pick David Carr said about his younger brother.
"He loves people and that's one of his highest qualities. At the same time, if he's trying to teach someone or go out there and compete, he doesn't care if you're 7 years old or 11 or 35, he's going to go out there and dunk on you and embarrass you."
Whether a video comes of out of Carr dunking on his brother's son remains to be seen, and although it would be fun to see it would hardly make a difference to the draft status of the former Fresno QB.
What does give the 22-year-old advantage though is his brother's help during the process of getting ready for the NFL.
David has been there and done it before with regard to preparing for the NFL. He played in the Senior Bowl, he worked out at the NFL Combine, and he was drafted number one overall as well by the Houston Texans.
All of that experience is extremely valuable to his brother Derek.
"Before he went to the Senior Bowl, I gave him a heads up about what happens at the Senior Bowl. Before he went to the combine, I told him what would happen at the combine," David added.
"Before he goes to his pro day, I'm going to tell him what goes on at his pro day. We talk about specific things you have to do as a quarterback. Progressions, hot reads, and different things you have to know. I didn't know that when I came out. I had no one to tell me that."