On Mother's Day, May 13, 1973, Ramona entered the national spotlight. 55-year-old former-tennis-great-turned-hustler, Bobby Riggs, challenged the then 30-year-old women's world number-one player, Margaret Court, to a match. The match was staged at Ramona's San Diego Country Estates. Riggs won easily, 6–2, 6–1. He later lost to Billie Jean King in The Battle of the Sexes at the Astrodome in Houston, Texas, on September 20, 1973.