#13 is here.
#12 October 30, 1988 Young's Run.
The Niners were 5-3, in third place in the NFC West, coming off a loss, and facing a Viking team which had the NFLs second ranked defense and had bounced them from the playoffs the year before.
With less than 2 minutes to go and down by 4, the Niners had third down at the Viking 49; a failure to convert most likely means dropping to 5-4 and out of contention.
Then Steve Young made the greatest run in 49er history. San Francisco beat the Vikings, went on to win their third Super Bowl, and then their 4th the following year.
The 11th greatest moment in Candlestick History is tomorrow.