Franklin has been a starter since his rookie season of 2011. He started all 17 games at left guard in 2014, including the divisional playoff game. During his first three seasons he started 53 of 54 games at right tackle.
Franklin's only missed start came in 2013 when he was sidelined by a sprained left knee for a game against Indianapolis.
Robinson started the finale in Kansas City, the team's fifth different starting center during the season.
Mathews played in 12 games with two starts.