Washington left Sunday's practice and was seen icing his right leg while watching from the sideline, Brian Batko of the Pittsburgh Post-Gazette reports.
It appears to be a minor injury because Washington didn't go to the locker room to receive treatment for the issue. It was reported earlier in the week the 25-year-old requested a trade, though coach Mike Tomlin refuted that speculation. Washington may take things easy for a couple days, but the issue shouldn't affect his status for the start of the regular season.