 In 1975, she won the in Bournemouth, reached the semifinals of the French Open, and played for the United States Federation Cup team in doubles, partnering Julie Heldman.In 1976, Newberry beat Martina Navratilova in the first round of the US Open 1–6, 6–4, 6–3.Navratilova said, "I still consider that loss the worst of my career, at least in the way I responded to it on and off the court."