[1] Graebner was included in the year-end top 10 rankings issued by the United States Lawn Tennis Association from 1961 through 1965 and in 1967.

[3] Graebner paired with Nancy Richey to win doubles titles at the U.S. National Championships in 1965 (defeating Billie Jean King and Karen Hantze Susman in the final) and the Australian Championships in 1966 (defeating Margaret Court and Lesley Turner Bowrey in the final).

In 1961, at the tournament in Cincinnati, Caldwell won the doubles title with Cathie Gagel and lost the singles final to Peachy Kellmeyer.

Graebner was on the first U.S. Federation Cup team and attended California State University, Los Angeles.

After her playing career ended, Graebner was a radio and television commentator and a vice president with Tennis Week magazine.