Kyle Shanahan and the San Francisco 49ers are no longer the unquestioned top dogs in the much-improved NFC West, which could make for a situation where one error in a team's roster construction may be all that is needed to bring them crashing down to a very disappointing last-place finish.
Even though the Seattle Seahawks gave Sam Darnold a ton of money in free agency after coming just a few percentage points short of making it the postseason as a wild-card team last year, the Niners should still feel confident in any of their hypothetical head-to-head matchups due to a suspect offensive line.