The National Football League announced its preseason schedule this morning, and it's no surprise that the Seattle Seahawks schedule includes all AFC West opponents.
The league typically tries to limit travel for its teams during the preseason, and the Seahawks usually do not play against NFC West divisional opponents during these exhibition contests, so that's why you see Seattle facing a steady diet of Oakland and San Diego during the preseason.
Here's Seattle's schedule.
Week 1 (Aug. 13-17) Seattle Seahawks at San Diego Chargers
Week 2 (Aug. 20-24) Denver Broncos at Seattle Seahawks
Week 3 (Aug. 27-31) Seattle Seahawks at Kansas City Chiefs
Week 4 (Sept. 3-4) Oakland Raiders at Seattle Seahawks