In Flat racing, an apprentice jockeys’ licence allows young, inexperienced riders – aged between 16 and 26 years – to receive a weight allowance, or ‘claim’, when riding against full professional jockeys to compensate for their initial lack of experience. According to Rule (F) 140 of the Rules of Racing, apprentice jockeys can claim 7lb until they have ridden 20 winners, 5lb until they have ridden 50 winners and 3lb until they have ridden 95 winners.
In other words, once an apprentice has ridden 95 winners, his or her apprentice licence becomes invalid and he or she is said to have ‘ridden out’ his or her claim. He or she is then required to apply for a full professional licence with six months. Of course, it is also possible for an apprentice to turn 26 before he or she has ridden out his or her claim, in which case his or her apprentice licence becomes invalid anyway and he or she must apply for a full professional licence immediately.