Take a look at Gore’s YPC month-by-month the last two seasons:
Gore exited early in that first game against Seattle with an injury. He has not broke 100 yards since. One thought was that the emergence of Colin Kaepernick in the running game was stealing carries from Gore, but that is not the case.
The table above shows Gore is actually carrying the ball more in his last seven games, but is getting far less from those carries. The injury to Kendall Hunter could have teams focusing more on Gore, or he may be wearing down again late in the season.
Gore will bring his best to the game in Seattle, but the Seahawks defense will play him as physically as any defense he has faced all year. Every hit they get on him Sunday could reduce Gore’s effectiveness in the playoffs.