https://www.dallascowboys.com/news/ceedee-lamb-ready-to-be-that-guy-at-receiver He apparently also added 10 pounds "of muscle," according to the article.
The 10 lbs is fairly common for NFL players. They have the whole off season with the best training money can buy Growing a half inch at his age I would think is pretty rare
I went from 5'10 to 6'0, but apparently it was just wishful thinking. I told my wife I was 6'0', but then she looked at my military ID and it said 5'10'.
"I'm in the best shape of my life" is so 2021. "I'm getting taller at 23" is now in. Our athletes have evolved.