The 2018 season was the San Francisco 49ers' 69th in the National Football League, their 73rd overall, their fifth playing their home games at Levi's Stadium and their second under the head coach/general manager tandem of Kyle Shanahan and John Lynch. The 2018 49ers would go on to set one more notable "futility" mark after the team went 8–0 to start the following season, thus giving the 2018 49ers the worst record in NFL history of any team that went on to go undefeated that far into the following season.