The winners have their names inscribed on the Wagar Trophy, which honors one of the all-time great players.
Margaret Wagar (1902-1990), inducted into the ACBL Bridge Hall of Fame in 1999, became Life Master #37 in 1943, the fifth woman to earn the rank.
One Women's Knockout Teams champion defended its title without any change in personnel, in 2001.
The first winner under the knockout format, in 1976, had won the last two premier championships for women teams under board-a-match conditions in 1974 and 1975.
Mary Jane Farrell won the premier women teams championship ten times from 1964 to 1990, six under board-a-match format and four Wagar Knockouts.