The Curtis Cup is the best known team trophy for women amateur golfers, awarded in the biennial Curtis Cup Match. It is co-organised by the United States Golf Association and The R&A and is contested by teams representing the United States and "Great Britain and Ireland". The same two teams originally contested the Ryder Cup, but unlike that competition, the Curtis Cup has not widened the Great Britain and Ireland team to include all Europeans. Many women who have gone on to become stars of women's professional golf have played in the Curtis Cup.