Walker (oblique) is listed as doubtful for Sunday's game against Miami, but he did manage a limited practice Friday, Bob Condotta of The Seattle Times reports.
The return to practice is a good sign for Week 4, if nothing else, and it confirms that fantasy managers planning to start Zach Charbonnet will need to check Seattle's inactive list ahead of a 4:05 p.m. ET kickoff this Sunday. Walker will have an extra day to get ready the following week, as Seattle faces the Lions on Monday, Sept. 30.