Niners vs. Ravens

San Francisco 49ers v Baltimore Ravens

Baltimore Ravens fans. (Photo by Rob Carr/Getty Images)

San Francisco 49ers v Baltimore Ravens

Head coach Jim Harbaugh (2ndL) of the San Francisco 49ers and his brother, head coach John Harbaugh of the Baltimore Ravens (L) talk with their parents Jack (C) and Jackie Harbaugh, and John's daughter Allison. (Photo by Larry French/Getty Images)

San Francisco 49ers v Baltimore Ravens

Head coach Jim Harbaugh (L) of the San Francisco 49ers and his brother, head coach John Harbaugh of the Baltimore Ravens (C) talk with their parents Jack and Jackie Harbaugh, and John's daughter Allison, before the start of the game between the Baltimore Ravens and the San Francisco 49ers at M&T Bank Stadium on November 24, 2011 in Baltimore, Maryland. (Photo by Rob Carr/Getty Images)

San Francisco 49ers v Baltimore Ravens

NaVorro Bowman #53 of the San Francisco 49ers attempts to tackle Ray Rice #27 of the Baltimore Ravens at M&T Bank Stadium on November 24, 2011 in Baltimore, Maryland. (Photo by Rob Carr/Getty Images)

San Francisco 49ers v Baltimore Ravens

Tarell Brown #25 of the San Francisco 49ers intercepts a pass intended for Torrey Smith #82 of the Baltimore Ravens during the first half at M&T Bank Stadium on November 24, 2011 in Baltimore, Maryland. Brown was called for pass interference on the play. (Photo by Rob Carr/Getty Images)

San Francisco 49ers v Baltimore Ravens

Ray Rice #27 of the Baltimore Ravens is tackled by Donte Whitner #31 of the San Francisco 49ers during the first half at M&T Bank Stadium on November 24, 2011 in Baltimore, Maryland. (Photo by Rob Carr/Getty Images)