Townsend defeated defending champion Hansell in 1888, 6-3, 6-5. She became the first female repeat champion in the young history of the Championships in 1889 when she ousted Linda Vorhees, 7-5, 6-3. A bid for a three-peat was nullified in 1890, when
Ellen Roosevelt won her first title, defeating Townsend, 6-2, 6-2. Quiet until 1894, Townsend still had enough polish in her game to advance to the all-comers final, losing to Helen Hellwig, 6-2, 7-5. She advanced to the semifinals the following year and ended her career with an 8-3 record at the U.S. Nationals.
Townsend captured the first U.S. Women’s Doubles Championships in 1889, partnering with Margarette Ballard to defeat Laura Knight and Marian Wright, 6-0, 6-2.