The game got off to a wild start with dueling interceptions, an hour-long lightning delay and a safety before the first half. By the end of the third, Seattle quarterback Russell Wilson completed seven of 16 passes for 135 yards and a score, while San Francisco counterpart Colin Kaepernick was 8-of-17 for 82 yards.
Phil Dawson kicked a 21-yard field goal for San Francisco to make it 12-3 with 4:20 left in the quarter.
The lopsided game only added to the simmering rivalry between the two teams.
This season, Kaepernick and Wilson apparently made a wager that the loser must shave an eyebrow, a bet tied to a video game promotion.
Copyright 2013 by The Associated Press