The Redskins will play their first preseason game Aug. 12, which leaves the team very little time to get up to speed. Some players have less time than others. There is no timetable for Ryan Kerrigan’s return, but Coach Mike Shanahan said his rookie linebacker might not fully participate in practice until the end of the week.

“I’m not really sure. I’d say it’s probably going to take another two or three days – just guessing,” Shanahan said after practice Tuesday. “Just talking to Larry [Hess, trainer], they’re going to be a bit little bit more cautious than usual, make sure he’s ready to go.”

Kerrigan suffered a bone bruise in his right knee last Friday in the team’s first practice. He’s been an observer, not a participant, at practice since then. On Tuesday, he traded the black compression sleeve he wore on his right leg for a knee brace. He was able to run and stretch but still didn’t participate in position or team drills.

“It’s not fun watching practice,” Kerrigan said. “It’s what I’m faced with right now. I can’t get flustered or frustrated by it. Like coach has been saying, I’ll take mental reps and make practice count the best I can. …But you can’t really put a timetable on it because it’s all about how I respond.