The document lists the top 10 most popular sports in the world based on the number of fans. Soccer is ranked as the most popular with 3.3-3.5 billion fans globally due to its widespread popularity in Europe, Africa, Asia, and Americas. Cricket and basketball are respectively the second and third most popular sports, each with approximately 2-3 billion fans concentrated primarily in certain regions. The remaining sports in the top 10 are field hockey/ice hockey, tennis, volleyball, table tennis, baseball, American football, rugby, and golf.