2013 San Francisco 49ers season
The San Francisco 49ers season was the franchise's 64th season in the National Football League, the 68th overall and the third under the head coach/general manager tandem of Jim Harbaugh and Trent Baalke. This was the 49ers' final season playing their home games at Candlestick Park before moving into Levi's Stadium for the 2014 season.
San Francisco 49ers
The Seattle Seahawks have become a new rival of the 49ers, following the NFL's realignment in 2002 that put both teams in the same division (Seattle had been a brief former rival during their inaugural 1976 season, when the team was in the old pre-realignment NFC West). Prior to 2002, the teams played each other almost every season during the pre-season, but only every three years during the regular season when the AFC West and NFC West teams faced each other. So far, their rivalry has not been as intense as other division foes because for the most part both teams have not been good at the same time. In the middle to late part of the decade, the Seahawks lost the division and their favorable record against the 49ers reflected this. However, games at CenturyLink Field, one of the toughest stadiums to play at as a visiting team, have still been difficult to win. The 49ers have a 3–7 record all-time at that stadium, with their largest margin of victory there being ten points, and failed to score a touchdown in four of those losses. The rivalry has intensified after the 49ers hired Jim Harbaugh out of Stanford in 2011, as he and Seahawks and former USC head coach Pete Carroll had an intense rivalry in college. Seattle leads the all-time series 20–15 after winning both regular season games in 2014 and taking a week 7 win at Levi's Stadium in 2015.