As of September 12, 2019, here are the world rankings of tennis
Men:
1. Novak Djokovic
2. Rafael Nadal
3. Roger Federer
4. Daniil Medvedev
5. Dominic Thiem
Women:
1. Ashleigh Barty
2. Karolina Pliskova
3. Elina Svitolina
4. Naomi Osaka
5. Bianca Andreescu

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