Walker (knee) is listed as questionable, but he said he will play in Friday's contest against the Grizzlies, Tom Osborn of the San Antonio Express-News reports.
Walker was not expected to play Wednesday against the Heat before the game was postponed, but the extra time off appears to have served him well, as he's now expected to suit up Friday. With Dejounte Murray sidelined due to the league's health and safety protocols, Walker could see increased usage if he is indeed available.