The women's singles final of the US Open Tennis Championships in 2021 was contested by two teenage athletes. Top teenage players were not uncommon earlier in the US Open's 141 year history, but when was the last women's teenage final before 2021?
1999 The 2021 final was between 18-year-old British Emma Raducanu and 19-year-old Canadian Leylah Fernandez. The 1999 final was between 17-year-old Serena Williams and Martina Hingis, 18.
In the 10 years before the US Open Tennis Championship was held at Flushing Meadows-Corona Park in Queens, New York City, where was it held?