race meets at another velodrome in the country. In extraordinary circumstances, races have been declared no-contests, forcing velodromes to refund millions of yen in bets. Such results are generally known as a . A race at Shizuoka velodrome on 2 January 2008 was declared a failure when the back wheel of the pacer's bicycle nicked the bicycle of an actual competitor, causing him to fall. In a race at Iwaki-Taira Velodrome on 14 December 2008, separate infractions resulted in the disqualification of the entire field; all but one of the competitors were handed a one-year suspension by the velodrome after the race. The suspensions were lifted four months later. See also Motor-paced racing Single-speed bicycle UCI Track Cycling World Championships – Men's sprint UCI Track Cycling World Championships – Men's keirin UCI Track Cycling World Championships – Women's keirin BMX racing References External links Keirin's official website in Japan Cycle racing in Japan Events in track cycling Individual sports Sports originating in Japan