For two remarkable siblings from Botswana, tennis transcends sport – it's their family legacy. At just 18 and 15 years old, these rising stars represent the exciting evolution of tennis in their homeland.

As tennis gains momentum as one of Botswana's fastest-growing sports, these young tennis players have emerged as powerful role models. Their dedication to excellence, profound national pride, and unwavering commitment showcase the bright future of Botswana’s talents. Their success story reflects the broader positive impact of the country's diamond industry, which has helped create vital educational and athletic opportunities for young talents across the nation.

Fortune + De Beers Group | Episode 3 | Q&A:
Naledi and Ntungamili Raguin

Meet Botswana’s sibling tennis prodigies

Naledi and Ntungamili Raguin

Teenagers Naledi and Ntungamili Raguin show how success can be forged under pressure.

Before either athlete has even reached the age of 20, Naledi and Ntungamili Raguin have become rising tennis stars. The teen siblings, age 18 and 15 respectively, have spent their lives training in their home country of Botswana, but now they are working to take their skills to the international stage.

For the Raguins, tennis has always been a family matter, not only on the court but beyond. Naledi and Ntungamili have been guided by their father’s passion for tennis and their mother’s grounding influence. This support has inspired both a fierce rivalry and a deep familial bond that has fueled their success. Naledi is now a national champion and Botswana team member, and Ntungamili is training for the 2026 Youth Olympic Games. They both continue to inspire a new generation of players back home, where tennis is emerging as one of the country’s most promising sports.

Together, their story highlights their pride in Botswana, their relentless dedication, and the sacrifices behind their shared dream. It also signifies Botswana’s latent potential that, when nurtured, creates something brilliant—much like a diamond. This potential has been supported by the longstanding partnership between the government of Botswana and De Beers, generating resource wealth through a thriving diamond industry and creating new opportunities in education and sports that has helped cultivate talents like the Raguins.

Naledi and Ntungamili sat down with Fortune Brand Studio to talk about how they stay motivated by their connection to family and community.

Naledi: Our dad cleaned up some abandoned courts at a tennis club in Francistown, where we grew up, and he opened a school of tennis for the community. That’s how we started playing tennis. We used to spend all our days at the tennis courts.

Ntungamili: I was four when I started, and Naledi was six. Initially, we didn’t play tennis together because she is two years older than I am, and I was still very small. I used to play with the racket and a ball with my friends, and she would have real training with the coach and other kids.

Naledi: We were quite competitive when we were younger. We used to cry sometimes when one of us would lose a match against the other. But I’d like to think we’re a bit more mature now. We don’t take it to heart anymore, and now we enjoy playing together.

Ntungamili: Well, off the court, it’s good because she helps me in tournaments. She coaches me, and tells me things that I didn’t do in matches so that I’m better in the next match. I don’t train with her anymore, but before, there was more of a rivalry.

Naledi: When I hit winner shots against him, it feels good because right now his level is higher than mine. He grew—he’s taller, bigger, and he’s a boy, so it does mean a lot to me when I manage to make things difficult for him. But, sometimes, there are moments of frustration when I play with him because he pushes me to my limits.

Ntungamili: My sister is always aggressive on the court, and I need that. I tend to wait for others to make mistakes, and my coach keeps saying I should play like her—I should move forward and try to finish the points.

Naledi: They are the reason we started tennis, and they’ve always supported us. My dad used to make it possible for us to go and compete in countries such as South Africa and Zimbabwe, and we used to go by car. I remember we drove 15 hours just to go to one tournament. We didn’t really have a lot of money, and it was expensive to go to tournaments, so they would save up the money we had and put the priority on tennis.

Ntungamili: Off the court, my mom helps balance my life with tennis. She wants me to have friends and lets me go out and everything so I have a life outside of it. My dad is more into tennis, so he’ll always be there at tournaments. He coaches us mentally and talks a lot at dinner, briefing us. My mom calms him down when he’s angry about a game [laughs].

Naledi: I really have a strong connection with Botswana because I grew up here. When we left, all my friends were here along with my family on my mother’s side—my aunts, cousins, and grandparents. We were really close with the family here in Botswana. I liked coming back to Botswana to see the people and feel the support, and I just felt much better when I was here.

Ntungamili: We’re really proud of playing for Botswana because it’s unique. The people here are always supportive of us, and every time people ask me, I’m happy to say that I play for Botswana. Sometimes, people don’t know about Botswana, so we introduce them to the country.

Naledi: I’ve been to many countries in Africa, thanks to tennis, and I’ve seen that Botswana is well-off. From my experience, it is one of the best countries in Africa when it comes to sports facilities and schools—and that is thanks to diamonds. De Beers and the government have used the money to really take Botswana to the next level.

Naledi: My ultimate dream is to represent Botswana in the Grand Slams and win. I would like to make my country proud. Letsile Tebogo’s win has inspired me, and now I want to participate in the Olympics and win there too.

Ntungamili: I want to win a Grand Slam and be an Olympic champion. I need to pass through many paths to get there, such as going through Junior Grand Slams, passing the Futures, and winning them to go up in the ranking so that I can start playing Grand Slams.