For the second straight season, Raiders cornerback DJ Hayden is unable to practice after the team's first OTA's. Last year he left after one OTA session with chest pains and was hospitalized in need of scar tissue removed from his abdomen. Now yet again after one practice session, he is out again.

This time he was seen by media on hand standing along the sideline at Raiders' OTA practice wearing a walking boot. Dennis Allen is expected to elaborate on the injury in his post-practice press conference.

Rob Carr over at SB Report snapped a shot of Hayden in said walking boot.

On the first day of OTA practice, he was a main storyline as he was finally able to prepare for OTA's and was excited at the prospect of having a full off-season - something he didn't get last year.

The scar tissue that had built up in his abdomen was the result of the emergency surgery he had done following a life-threatening heart injury he suffered in practice during his senior season at the University of Houston.

The recovery from the second surgery kept him out all of the Raiders off-season training program. Then he was forced to wear a red non-contact jersey in training camp until he was cleared by doctors to resume full contact.

Hayden then played half the season before being lost with a groin injury and placed on injured reserve.

He had bulked up this off-season and was looking forward to a full off-season as the team's projected starter at right cornerback. I appears we all spoke too soon.

UPDATE: From Dennis Allen's press conference

Allen said Hayden rolled his ankle last week. Doesn't expect it to be serious — Vic Tafur (@VicTafur) June 2, 2014

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