In the world of tennis, there are primarily two types of balls: pressurized and pressureless. Pressurized balls are the most common and are used in professional matches. They have a hollow core filled with air, offering a good bounce, speed, and spin. On the other hand, pressureless balls are solid inside and are ideal for beginners or for use in practice sessions because they last longer but don't bounce as high. So depending on your level and purpose, you can select the tennis ball that suits you best.
Top professional tennis players earn a staggering amount of money every year. This is due to the large viewership and high demand for the sport, which leads to lucrative endorsements and prize money. The top players can make upwards of $20 million a year from prize money, sponsorship deals, and endorsements. This is a huge sum of money compared to the average tennis player, who earns only a fraction of this amount. The earning potential of a professional tennis player is immense, and it's no surprise that many of the world's best flock to the sport.