Louis Cardinals announced a three-year contract extension with general manager John Mozeliak on Thursday and exercised the 2014 option for manager Mike Matheny, hoping the pair will keep the team contending for the World Series. –- Cardinals general manager John Mozeliak has signed a three-year contract extension that, at the end of its duration, will solidify Mozeliak as one of the longest-tenured GMs in organization history. Matheny, in the second year of a two-year contract, is now guaranteed through next year. Terms were not announced. Mozeliak, an 18-year veteran of the Cardinals front office, is credited with acquiring players such as All-Stars Matt Holliday, David Freese, Carlos Beltran, Lance Berkman and Rafael Furcal in his five years as GM. "We just wanted to solidify their standing in the organization and keep the continuity of the baseball operations going," chairman William DeWitt said, adding that the vision of the organization is to "win a championship but not at the expense of mortgaging our future."