For athletes in individual sports, a sponsorship can take them from a part-time amateur athlete to a full-time professional. Athletes such as fighters, track and field athletes and race car drivers rely on sponsorship money to allow them to train full time. Without sponsor money, many would be forced to work full-time jobs and would not have an adequate amount of time to train. This leaves them at a disadvantage facing opponents who have the resources to devote their lives to their sport.