Soon after the end of the 2005 season, Mike McCarthy, the 49ers' offensive coordinator of one year, left for the Green Bay Packers. On January 17, 2006, the 49ers hired Norv Turner as McCarthy's replacement. Whereas McCarthy based the majority of his offense on Bill Walsh's West Coast Offense, Turner has been known to use a power running scheme and vertical passing game more often than the West Coast scheme. Turner came to the 49ers after two unsuccessful seasons as the head coach of the 49ers' cross-bay rivals, the Oakland Raiders.