SEOUL -- Having become the newest member of the San Diego Padres, South Korean infielder Song Sung-mun said Tuesday his primary goal is to make the team's big league roster and stay there for the whole year.Song arrived back home Tuesday morning, just hours after the Padres announced their four-year contract with him. Although the club did not disclose the financial details, the Associated Press had reported Monday that Song signed for US$15 million."I'm really grateful that San Diego took such a huge interest in me and offered me a good contract," Song told reporters gathered at Incheon I…READ FULL ARTICLE