The Raiders have signed Matt Leinart to serve as Carson Palmer's backup. He signed a one-year deal. Oakland now has two former Heisman Trophy winners from Southern California at quarterback. Leinart spent two years behind Palmer at USC, including when Palmer won the Heisman Trophy in 2002. Leinart took over the Trojans the next season and won two national championships and the Heisman Trophy in 2004.