 Uniquely, the 2013 edition was not only the final event in the series, but also incorporated the World Series Core Team Qualifier.In Sevens Series terminology, "core teams" are those that are guaranteed a place in all series events in a given season.Unlike all other series events, the 2013 London Sevens had only 12 teams competing for series points, namely the top 12 core teams on the season points table following the season's penultimate tournament, the Scotland Sevens.