The 49ers will look to complete their first season sweep of the Seahawks since 2011, and it will be their first chance to complete a sweep of Seattle since 2012. The two teams met back in September when the 49ers beat Seattle 27-7 for the 49ers' first win of the season. Now both teams are trending in different directions, with the 49ers looking to extend their win streak to seven.
Here are a few numbers to know as the 49ers look to take the NFC West:
The 49ers' magic number of winning the NFC West to use a baseball term.