Melanie Jayne South, 14, of Bramshaw Rise, New Malden, was selected in June to represent her school, Nonsuch in Cheam, as a ball girl at the Stella Artois at Queens Club.
Melanie who has a Lawn Tennis Association rating of 2.3, will represent Nonsuch in the Surrey Tennis Festival, as well as playing in the under-15 nationals in Bournemouth next month.
Her father hopes to take her to Florida in December to play in the under-14 Championships and is looking for to sponsors. Kingston Council have already donated £100.
Her mother said: "If anybody could help this child to realise her dream and play in the tournament, we would be so grateful.
"She will never be 14 again and if she doesn't do it this year, that's it."
If you would like to sponsor her calling 020 8949 0497.