A professional footballer is an athlete who plays football, also known as soccer in some countries, at a competitive level. They are typically contracted to a club or team and earn a salary for their performance in matches and training. Professional footballers often participate in leagues, tournaments, and international competitions, showcasing their skills and teamwork. To become a professional footballer, individuals usually start training at a young age, often joining youth academies associated with clubs. They must develop physical fitness, technical skills, and tactical understanding of the game. Many professional footballers aspire to represent their national teams, such as the FIFA World Cup.