 Franklin opened the 2018 season with his largest opening-round haul of eight goals against West Coast in the first AFL match at Optus Stadium.After missing three weeks with a bruised heel sustained in the opening-round win, Franklin kicked three goals in his return match in round 9 against Fremantle at the SCG, including his 300th goal as a Swan, becoming only the second player after Tony Lockett to kick 300 goals for two clubs.In round 15, Franklin played his 100th game for Sydney, kicking four goals in the loss to Richmond at Etihad Stadium.