The 49ers play the Seahawks at Candlestick on Thursday night. In the meantime, I’ll break down a couple of key matchups every day. Frank Gore and Kendall Hunter vs. The Seahawks run defense This is the key matchup of Thursday night’s game. The Seahawks defense allows 3.3 yards per rush and 70 rushing yards per game. The 49ers offense gains 5.9 yards per rush and 176.5 rushing yards per game….