Fantasy football is a game in which the participants serve as owners and general managers of virtual professional American football teams. The competitors select their rosters by participating in a draft in which all relevant National Football League (NFL) players are available. Fantasy points are awarded in weekly matchups based on the actual performances of football players in real-world competition. The game typically involves the NFL, but can also involve other leagues, such as the Canadian Football League or NCAA. There are three main types of fantasy football: