Winslow was riding a motorcycle in the Tri-C Corporate College parking lot when he hit a curb at 35 m.p.h. and flew over the handlebars.
The helmet he was wearing came off.
Members of the Westlake Fire Department were the first responders. Winslow complained of chest pains when fire fighters arrived.
He was taken to Fairview Hospital and was transferred Monday to the Cleveland Clinic where the team’s medical staff will treat him.
It's believed Winslow has broken ribs.
Drugs and alcohol were not a factor.
The team says that Winslow’s injuries aren’t life-threatening. It's not known whether the Browns knew Winslow owned a motorcycle.
Winslow missed nearly all of his rookie year with the Browns after breaking his leg against Dallas in Week 2.