Career
Her best performance at a Grand Slam tournament was reaching the final of the doubles event at the 1960 United States. Championships. Partnering compatriot Ann Haydon they lost the final in straight sets to Maria Bueno and Darlene Hard. Her best Grand Slam singles performance was reaching the fourth round of the 1963 United States. Championships in which she lost to Margaret Court.
At the Wimbledon Championships she reached the fourth round in 1962 and 1964.
Between 1961 and 1964 Catt played in four Wightman Cups, a women"s team tennis competition between the United States and Great Britain. During the 1962 Wightman Cup she defeated Nancy Richey.
In the final she was victorious against Lorna Cawthorn. Catt was a runner-up at the British Hard Court Championships in 1961, losing the final to Angela Mortimer in straight sets.
Partnering Elizabeth Starkie she reached the doubles final of the 1963 Pacific Coast Championships in which they were beaten by Maria Bueno and Darlene Hard.
Doubles: 1 runner-up.