Francesca Jones has the unusual hereditary disease hypohidrotic ectodermal dysplasia and was born with three fingers and one thumb on each hand.
On her feet she lacks one and two toes respectively.
When she was a child, she was operated on several times and the doctors said she could forget a career as a tennis professional.
But the 241-ranked player took a big step in her career when she qualified for her first Grand Slam, the Australian Open, last week.
Now the British hope that she can inspire others.
- You could say that I disproved the doctors and probably a lot of other people.
I play to have a positive impact on those who hopefully take part in my story.
I have so much more that I want to achieve and am only at the beginning of my journey, says the 20-year-old according to news.com.au.
Jones says she has a lot to work on to get better physically.
Her balance works differently than others as she lacks toes and she has, for example, a lighter racket than others.
- All people have physical weaknesses - if you are not like Cristiano Ronaldo.
I'm just trying to get better at mine just as I'm trying to evolve in every way.