Gary Sheffield says that playing for the Mets, the team he signed with on Friday, is a dream come true. Sheffield's uncle, Dwight Gooden, pitched for the Mets in his career. "This has been a lifetime thing for me," Sheffield said. "With my uncle here with the Mets, it's been a dream of mine for a long time. I never thought it would happen, but I had the chance to come here and fulfill my dream."