NFL Team Previews: San Francisco 49ers

The San Francisco 49ers had their first winning season since 2002 a year ago and did it in a big way. Rookie head coach Jim Harbaugh led a renaissance by the Bay, as the team jumped from six wins to thirteen wins in a single season, won an epic playoff game against New Orleans and then lost an equally epic NFC Championship Game to the New York Giants in overtime. Was it a sign of things to come, a one-year wonder or somewhere in between? TheSportsNotebook previews the 49ers and their chances in 2012…