Career
Dalton was the runner-up in ten Grand Slam doubles tournaments. Dalton reached the final at Wimbledon in 1968, where she lost to Billie Jean King 9–7, 7–5 after defeating Court in a quarterfinal and Nancy Richey Gunter in a semifinal. She also reached the singles semifinals at Wimbledon in 1971 at the age of 33, losing to Court in three sets, and at the Australian Championships in 1968, losing to King in three sets.
In the singles final she defeated Helga Niessen in straight sets.
Dalton was unusual in that she did not reach the quarterfinals of a Grand Slam singles tournament outside of Australia until she was 29 years of age. From Wimbledon in 1967 until the end of her career, she reached at least the quarterfinals in half of the Grand Slam singles tournaments she played (ten out of twenty).
Dalton was one of the original "Virginia Slims 9", the nine players who in 1971 joined the break-away Virginia Slims tour organised by Gladys Heldman. Singles: 1 final (1 runner-up)
Women"s doubles: 11 finals (8 titles, 3 runners-up)
Australia
Women"s Doubles runner-up: 1968 (with Bowrey)
Mixed Doubles runner-up: 1967 (with Roche)
French Championships
Wimbledon
Singles runner-up: 1968
Women"s Doubles runner-up: 1966 (with Court), 1972 (with Françoise Dürr)
Mixed Doubles runner-up: 1965, 1969 (both with Roche)
United States
Mixed Doubles runner-up: 1963 (with Editor Rubinoff), 1964 (with Rubinoff), 1965 (with Frank Froehling III), 1970 (with Frew McMillan)
A = did not participate in the tournament.