The Rosslyn Park HSBC National School 7s is the largest rugby tournament in the world with over 10,000 players competing each March. Beginning in 1939, the tournament is hosted by Rosslyn Park FC. Overall there are nine different competitions at the tournament, the Prep Schools, Junior Schools, U14 Boys, Colts Boys, U18 Boys Vase, U15 Girls, U18 Girls, and U18 Girls AASE competitions, and the biggest prize in school 7s, the U18 Open Boys, the winners of which since the tournament began in 1939 can be seen below.