First-round pick D.J. Hayden underwent abdominal surgery to remove scar tissue, but the Oakland Raiders expect the rookie to make a full recovery before the start of training camp.
"We don't anticipate it being an issue," coach Dennis Allen said. "He'll probably be out the rest of the offseason."
The 12th overall pick in April, Hayden is penciled in as an instant starter. He will miss the remainder of organized team activities (OTAs) to recover, but the surgery was considered minor and unrelated to the life-threatening injury Hayden overcame last November.
Free-agent acquisition Tracy Porter missed most of last week's OTAs and didn't return Tuesday.
"It sets us back a little bit," Allen said.
Hayden was near death after an on-field collision that resulted in a torn blood vessel in his heart.
That injury was described as "non-survivable" by Dr. Ron Albarado in Houston.