Mike Mussina is expected to announce his retirement as early as Thursday, bringing an end to a terrific 18-year career. He informed the Yankees of his decision today, according to a team official, but no official announcement has been made. Mussina is going out on a high note, having just won 20 games for the first time this past season. He is the first pitcher since Sandy Koufax in 1967 to retire following a 20-win season, but where Koufax retired due to physical problems, Mussina chose to ...