San Diego Chargers wide receiver Vincent Jackson, left, make a catch on his way to a touchdown in the second quarter as San Francisco 49ers linebacker Takeo Spikes (51) chases him during an NFL football game, Thursday, Dec. 16, 2010, in San Diego. (AP Photo/Denis Poroy)

Photo by: Denis Poroy

San Diego Chargers wide receiver Vincent Jackson, left, make a catch on his way to a touchdown in the second quarter as San Francisco 49ers linebacker Takeo Spikes (51) chases him during an NFL football game, Thursday, Dec. 16, 2010, in San Diego. (AP Photo/Denis Poroy)