In his rookie season, Sweezy got the first start of his career in the season opener against the Arizona Cardinals replacing second year guard John Moffitt. He again started for the injured Moffitt in the last two games of the regular season against the San Francisco 49ers and St. Louis Rams. During the 2012 campaign he had three starts and played in 13 games. For the 2013 season Sweezy started 13 regular season games and in the post season for a Seahawks team that went on to win the Super Bowl that year. In 2014 Sweezy had his first season where he started every regular season game at right guard. The Seahawks would go on to return to the Super Bowl losing to the New England Patriots.
