Raiders No. 1 draft pick D.J. Hayden to miss off-season with abdominal pain

The Raiders drafted D.J. Hayden 12th overall after he suffered a heart injury . (Thearon W. Henderson/Getty Image)

Oakland Raiders first-round draft pick D.J. Hayden will miss the rest of the off-season after abdominal surgery. ESPN's Adam Schefter reports the injury is related to a nearly fatal heart injury the cornerback suffered last year.

The Raiders surprised many by selecting Hayden with the 12th overall pick after the cornerback suffered a life-threatening heart injury in November when he ran into a teammate and severed his vena cava at the University of Houston. SI.com ranked Hayden as the third-best cornerback prospect in the 2013 draft.

Coach Dennis Allen said the rookie should be ready to go when training camp begins in late July.

The Raiders added to their collection of cornerbacks be signing veteran Charles Woodson last week.

BURKE: Charles Woodson's decision may have been about more than money

From SilverandBlackPride.com

"DJ Hayden did not practice today," said Dennis Allen. "He's got an abdominal issue that's probably gonna keep him out the rest of OTA's but he should be ready to go for training camp.""It's obviously not a good thing from a football standpoint. As a rookie, you need all the reps you can get, all the work you can get and then obviously when you combine that with Tracy (Porter) being out for really most of last week and potentially this week, we'll see, that kind of sets us back a little bit."

Dennis Allen says the team is unsure whether the issue is directly related to Hayden's heart injury that forced him to have open heart surgery last November.

"You know, we can't rule that out, obviously, but right now I don't know exactly what the correlation is to it. But we don't anticipate it being an issue," said Allen. "He'll probably be out for the rest of the off-season and be ready to go for training camp.