However, in 1929–30 he was reintroduced into the Arsenal side, alternating with Baker at right half, until centre half Herbie Roberts was injured against West Ham United. Seddon moved into defence and not only played the last twelve games of that season, but started the 1930 FA Cup Final, in which Arsenal beat Huddersfield Town 2–0 to win their first major trophy. He played in Arsenal's 2–1 victory over Sheffield Wednesday in the Charity Shield at Stamford Bridge in October 1930.