The Yankees plan to work Joba Chamberlain in the rotation worked to perfection against the Mariners on Saturday afternoon, according to MLB.com. New York cruised to their fourth-straight victory as Chamberlain relieved a shaky Mike Mussina with two scoreless innings of work at Yankee Stadium. Joba threw 40 pitches, a new career-high, striking out two batters and allowing one hit along the way. The Yankees won 12-6, as their bats came alive in the later innings to add insurance runs to their early lead.