In most racing jurisdictions around the world, jockeys are prohibited from betting on races in which they are riding. This rule is in place to avoid any potential conflict of interest or the appearance of impropriety that could arise if a jockey had a financial interest in the outcome of a race beyond their normal earnings.
The Jockey Club, which is the organization that governs thoroughbred racing in the United States, explicitly forbids jockeys from betting on races in which they are competing. Similarly, racing authorities in other countries have their own rules and regulations that typically prohibit such practices.
Violations of these rules can result in disciplinary action against the jockey, including fines, suspensions, or even a permanent ban from racing, depending on the severity of the infraction and the policies of the governing racing authority. These rules are enforced to maintain the integrity of the sport and ensure a level playing field for all participants.