Ravens tight end Ed Dickson remains out indefinitely with a slightly torn right hamstring.
"You can't rush back those things," Dickson said. "I'm trying my hardest to get back out there. It kills me. I'm hard on myself. I want to get back out there today, but I don't want to go out and hurt the team and be out for weeks during the regular season.
"It's one of those things where you got to look back and see if you did all the right things to prevent the thing. You never know with a muscle pull. You have to make sure that you take care of it so it's not recurring all the weeks in the season. You have to make sure you're on top of those things. I'm pretty sure that we pinpointed it and we're just trying to get it as healthy as we can."
Dickson was noncommittal on whether he can return in time for the Ravens' Sept. 5 regular-season opener against the Denver Broncos. This could have a lot to do with why the team signed free agent TE Dallas Clark on Sunday.