LOS ANGELES -- The Dodgers on Monday announced the signings of three veterans to Minor League contracts with invitations to Major League camp.

Infielder Juan Castro, catcher JD Closser and utilityman Eugenio Velez have signed on, basically for depth at Triple-A, although Castro seems to have the best chance to make the Major League club at some point in the season because of his slick defense.

Castro, 38, is back with the organization for a fourth time and will receive $500,000 if he makes the club. He opened the 2010 season with Philadelphia, was released after batting .198 and signed by the Dodgers. He spent 10 days with them in the Major Leagues, the rest at Triple-A, and his season was cut short when he went home to attend to his ailing wife, who has since recovered.

Closser, 30, spent parts of three seasons in the Major Leagues with Colorado, most recently in 2006. This will be his third season in the Dodgers' system.

Velez, 28, has made Major League appearances with the Giants in each of the past four seasons, but he was non-tendered earlier this month.