“…In addition, relatively older children (athletes) have a greater opportunity to participate in competitions and, consequently, may enhance their psychological, technical, and tactical abilities, thereby supporting greater athletic development [2]. The relative age effect has been confirmed in many types of sports, including baseball [3, 4], soccer [5–8], tennis [9], cricket [10], basketball [4, 11], NASCAR [12], sumo wrestling [4], rugby [13], judo [2], ice hockey [14–17], and winter sports [18–21]. …”