Six months after nearly dying from a scary on-field collision, D.J. Hayden says he's ready to focus on football again.

The Oakland Raiders rookie cornerback hasn't played since suffering a torn inferior vena cava during practice last November at the University of Houston. The injury, to the primary vein of the heart, comes with a 95 percent fatality rate.

But Hayden endured to became the 12th overall pick in the draft and was on hand for Oakland's noncontact rookie minicamp over the weekend.

"It felt so great just to be out there, to put the helmet back on and actually be back on the field," he said, via the Bay Area News Group.

Hayden said he's been "completely" cleared by doctors since the accident. His biggest health concern over the weekend was a slight hamstring strain dating back to his pro-day training regimen.