Walker (shoulder) played catch for a second straight day Friday, Tim Healey of Newsday reports.
Walker felt good following Friday's throwing session, and he hopes to throw a bullpen Sunday, Deesha Thosar of the New York Daily News reports. He's hopeful that he'll be able to make a rehab start sometime next week, which would put him on track to join the Mets' rotation early the following week as long as he's built up enough strength and is feeling good.