Synchronized swimming, FINA Aquatics World Championships, Duet free routine - Duet free routine World Champions

1973 Teresa Andersen - Gail Johnson
1975 Robin Curren - Amanda Norrish
1978 Helen Vanderburg - Michelle Calkins
1982 Sharon Hambrook - Kelly Kryczka
1986 Carolyn Waldo - Michelle Cameron
1991 Sarah Josephson - Karen Josephson
1994 Becky Dyroen-Lancer - Jill Suduth
1998 Olga Sedakova - Olga Brusnikina
2001 Miya Tachibana - Miho Takeda
2003 Anastasia Davydova - Anastasia Ermakova
2005 Anastasia Davydova - Anastasia Ermakova
2007 Anastasia Davydova - Anastasia Ermakova
2009 Natalia Ishchenko - Svetlana Romashina
2011 Natalia Ishchenko - Svetlana Romashina