Mariners manager Eric Wedge said Tuesday that Alex Liddi will work out at first base for most of the spring. Liddi has primarily played third base during his professional career, but he has also played 53 games at first base in the minor leagues. The goal this spring is to test his versatility with a potential bench role in mind. The 23-year-old Italian native socked 30 homers with Triple-A Tacoma last season and batted .225 (9-for-40) with three homers and six RBI with the M's as September call-up.