"DeSean Jackson injured his back after he caught a pass from quarterback Kevin Kolb in the afternoon portion of Saturday's training camp practice.

The Eagles gave the injury update after practice, but said Jackson was still being evaluated. About a half hour after the update, the receiver, who hasn't spoken to reports since he arrived at Lehigh two days ago, walked out of the locker room on his own, got into his car and sped away without comment.

Teammates and Eagles sources were saying the injury wasn't serious. Judging by the way Jackson left the practice facilty, they could be right.

Kolb was asked if his heart skipped a beat when he he saw his star wide receiver go down.

"Yeah, especially for a quarterback," Kolb said, before pausing. "Yeah, you definitely need him out there.""