Throughout his freshman season at Kansas, Darryn Peterson struggled with cramping issues that regularly knocked him out of games. Peterson's doctors believe it was his high usage of creatine that was causing the cramping.

"I'd never taken it before [he got to college]," Peterson said. "But after the season I took two weeks off and they did tests which showed my baseline level was already high. So, they said when I dosed [a process of increasing a dose over time to create maximum benefit at the beginning of taking a supplement], it must've made the levels unsafe."

Creatine is a supplement used to help increase muscle strength. Many young athletes use creatine to help them build up and maintain muscle growth.

In his lone season with the Jayhawks, Peterson missed 11 games, and was forced to leave several others early. Still, the 6-foot-6 guard showed enough talent that he's ranked second overall on ESPN's NBA Draft Top 100 prospects list.

With the cramping issues hopefully behind him, Peterson is working on his shooting and his on-ball playmaking ahead of the 2026 NBA Draft.

"I was off [the ball] most of the year, but some of that was me not really being myself," Peterson said. "So, coach was trying to figure out ways to help me still be effective without exerting too much. As the point guard you got to bring it up, you got to do everything.

"I've been thinking about how differently things could have been [at Kansas] if I didn't get hurt or have all this stuff going on. When I was out there, I felt like I still did all right. But there was another level of me that people didn't get to see."

Peterson is represented by Darren Matsubara.