Rank    Sport                              Estimated Global Following    Primary Sphere of Influence
1    Soccer (Association Football)      4.0 Billion                    Globally
2    Cricket                              2.5 Billion                    UK and Commonwealth
3    Field Hockey                      2 Billion                    Europe, Africa, Asia, and Australia
4    Tennis                              1 Billion                    Globally
5    Volleyball                      900 Million                    Western Europe and North America
6    Table Tennis                      875 Million                    Globally
7    Basketball                      825 Million                    Globally
8    Baseball                      500 Million                    United States, Caribbean, and Japan
9    Rugby                              475 Million                    UK and Commonwealth
10    Golf                              450 Million                    Western Europe, East Asia, and North America

source ：https://www.worldatlas.com/articles/what-are-the-most-popular-sports-in-the-world.html
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