 Complete the following phrase:  Suzana Petersen born 14 October 1947 is a Brazilian former tennis player. She competed at the 1968 Summer Olympics, where tennis was a demonstration and exhibition sport, in the six events. Together with Ecuadorian María Eugenia Guzmán  she finished third in the womens doubles exhibition event. She participated at Grand Slam tournaments at the 1968 French Open, 1970 French Open, 1969 Wimbledon Championships, 1970 Wimbledon Championships and 