She won the singles title at the 1927 French Championships, beating Irene Bowder Peacock of South Africa in the final.

Bouman was the first and, to this date, the only Dutch woman who has won a Grand Slam singles title.

[3] In October 1927 Bouman won the singles title of the inaugural edition of the Pacific Southwest Tennis Championship, defeating Molla Mallory in the final in three sets.

[6] Bouman died in Delden, Netherlands, four days after her doubles partner Henk Timmer.

The World Hard Court Championships (WHCC), actually played on clay in Paris or Brussels, began in 1912 and were open to all nationalities.