New Malden's Melanie South was the hero for Great Britain on day two of the Maureen Connolly Trophy in Bournemouth last weekend.
Melanie, who at 16 was the youngest member of the home team, beat the more experienced Riza Zalameda, of California, 4-6 6-4 6-1 to give GB a 3-2 lead.
Zalameda has played for the United States in World Junior Tennis and the World Youth Cup the junior equivalent of the Federation Cup but Melanie said: "I didn't know anything about her and didn't have any expectations. I felt very nervous and stiff to start with, but after I won the first set I knew I could beat her."
South was a break down after the opening game of the deciding set but won five straight games to take the match.
GB team captain Nick Brown said: "Melanie got better as the match went on. She's determined, has got weapons that can do damage, and she got stuck in and really competed."
Melanie's senior world ranking has gone into the 900s this year and, today she begins her challenge at the week-long Hastings Direct National Tennis Championships at the Bolton Arena.