Together with Ecuadorian María Eugenia Guzmán she finished third in the women's doubles exhibition event.
[2] Petersen also finished third in the women's singles and mixed doubles (with Teimuraz Kakulia of the Soviet Union) exhibition events, making her one of the "top Brazilian female players".
[3] Prior to Laura Pigossi and Luisa Stefani's bronze medal at the 2020 Summer Olympics, Petersen was the only Brazilian player to finish in the top three of an Olympic tennis event.
[6] Petersen, from Rio Grande do Sul, was trained by her father at the Clube Sogipa in Porto Alegre.
[1] Petersen defeated Italy's Anna Arias 5-7, 6-3, 8-6 to win the 1970 Parioli tournament.