The Yankees have signed left-handed reliever Hideki Okajima to a minor league contract. He will be in spring training as a non-roster invite. Okajima, 36, a member of the 2007 Red Sox championship team that spent most of 2011 in Triple-A, is expected to compete with Cesar Cabral, acquired by the Yankees in this year's Rule 5 draft, for a spot as a second lefty out of the bullpen with Boone Logan.