GLENDALE, Ariz. -- Alex Guerrero will be on the Los Angeles Dodgers' Opening Day roster.The Cuban infielder has done enough this spring, batting .344 with flashes of power, to convince the front office not to release him. The previous general manager, Ned Colletti, negotiated a four-year, $28 million contract that gives him the right to refuse a demotion to the minor leagues. Though a few teams, such as the Milwaukee Brewers, have expressed interest in trading for Guerrero, nobody wants to take on his full salary over the next three seasons.