Darryn Peterson Finally Found Out Why He Was Cramping All Season, and It's Not What You'd Think

One of the top prospects heading into next month's NBA draft has answers. Darryn Peterson, a freshman at Kansas, spent most of his college season fighting mysterious and sometimes brutal cramping that threatened to derail what looked like a star-in-the-making trajectory. But after running bloodwork and other tests once the college basketball season wrapped, his doctors zeroed in on the culprit: high doses of creatine.

The Supplement That Created a Problem

Peterson had never touched creatine before college. The popular supplement is designed to increase muscle strength, power, and growth, and it made sense that a freshman trying to compete at the elite level would want an edge. But when he dosed it, things went sideways. "After the season I took two weeks off and they did tests which showed my baseline level was already high," Peterson told ESPN this week in an extended interview. "So, they said when I dosed, it must've made the levels unsafe."

That simple explanation solved months of uncertainty. The cramping wasn't a genetic condition, wasn't a hydration issue, wasn't some structural problem that would follow him into the NBA. It was dosing a supplement without knowing where his baseline already sat.

What This Means Moving Forward

Peterson is ranked as the No. 2 prospect available in next month's draft. Now that he and his medical team understand what was causing the cramping, the path forward is clear: adjust how he uses creatine, or stop using it entirely. Either way, NBA scouts and executives can stop wondering if the mysterious cramping from his freshman season signals a deeper conditioning or medical issue.

For Peterson, this is huge. He gets to step into the draft conversation without that shadow hanging over his stock. For the team that selects him, it's the kind of pre-draft medical clarity that separates good picks from bad ones. The guy isn't hurt. He just needed the right information.

This article was created with AI assistance and reviewed by Seattle On Tap editorial staff. Always verify information with official team sources.