Athletes' earnings are calculated based on a combination of factors, including their salaries from professional sports teams, prize money from competitions, and endorsement deals with various brands. Salaries are often determined by contracts negotiated with sports teams, taking into account the athlete's skill level, experience, and market value. Prize money varies widely depending on the sport and the level of competition, with higher-profile events offering more substantial rewards. Endorsement deals can significantly boost an athlete's income, as companies pay to associate their products with the athlete's image and reputation. Additional earnings can come from appearances, merchandise sales, and social media partnerships.