Masson was active at the end of the 19th century and beginning of the 20th century. The daughter of Armand Masson, the founder of the
Tennis Club de Paris, in 1897 she became the first winner of the
French Tennis Championship beating
Suzanne Girod in two sets. She also won the championship in 1898 and 1899 because there was no opposition and in 1902 and 1903 against Girod and
Kate Gillou respectively. In 1907 she won the inaugural French doubles championships partnering
Yvonne de Pfeffel. In 1904 she again reached the final but was beaten by
Kate Gillou. ==Career finals (30)==