The Royal Samuelonian Tennis Federation, also known as the RSTF is an organisation set up in 202AP that takes charge of the organisation, co-ordination and promotion of tennis in St. Samuel and is recognised by the International Tennis Board. Its headquarters are at the Royal Samuelonian Tennis Academy, in Basterbury, Saint Sembus province. The roles of the RSTF include organising tennis competitions in St. Samuel, most notably the Saint Samuel Open and the Queens Cup, supporting and co-ordinating tennis clubs, and managing the St. Samuel tennis teams.