In a surprising turn of events, a Miami Dolphins rookie has decided to hang up his cleats just four days after signing his NFL contract. The Dolphins announced on May 8 that they had inked 11 undrafted free agents, including former Texas A&M running back Le’Veon Moss. But by Tuesday, Moss was placed on the reserve/retired list, as confirmed by the Sun Sentinel’s David Furones.

Moss attended rookie minicamp on May 8 and 9, but apparently, the transition from college to pro ball was more than he bargained for. During his four-year collegiate career with the Aggies, Moss rushed for 1,767 yards and 22 touchdowns, adding 236 receiving yards on 24 catches. Solid numbers, but the NFL is a different beast altogether.

While the exact reason for his retirement remains unclear, it’s a safe bet that the grueling demands of professional football—longer hours, tougher workouts, and heightened mental and physical expectations—played a role. Moss isn’t alone in this decision; undrafted rookies retiring after minicamp happens every year. Just a day earlier, Chicago Bears wide receiver Squirrel White (yes, that’s his real name) also called it quits.

For the Dolphins, the show must go on. After rookie minicamp, the team will take a short breather before diving into OTA offseason workouts later this month. The schedule includes sessions on May 18-19, May 21, May 26-27, and May 29, with mandatory minicamp from June 2-4. Additional workouts are set for June 8-9 and June 11. After that, it’s a long summer break until training camp kicks off in late July, followed by preseason action in August.