(Seattle, WA)  --  The Seahawks will try to extend their winning streak to five straight on Sunday when they go to San Francisco.  Seattle is coming off a 21-7 home victory over the Vikings on Monday night.  The Seahawks are 8-and-5 and appear poised to make the playoffs as a Wild Card.  The 49ers are 3-and-10 after beating Denver 20-14 last Sunday.