The Seahawks had six games when they recorded three sacks or more. In those six games, the team went 5-1. The only loss came in 6-3 loss to the Cleveland Browns when Charlie Whitehurst lost any fans he had, and Marshawn Lynch sat out with back spasms.
Three sacks in a game is not an unreasonable goal. Four teams averaged at least three sacks per game last year, and nine teams averaged over 2.6 sacks per game.
Seattle will get its chances this weekend against a weakened Cardinals offensive line. The Seahawks recorded two sacks in both games against Arizona last year. The pass rush should be improved and the Cardinals line should be less capable. Finding a way to get that one extra sack makes a win on Sunday all that much more likely.