BEIJING, Aug. 16 (Xinhua) -- Following are the factbox on men's cycling keirin at the August 8-24 Beijing Olympic Games:

    Introduction:

    Riders will run a two and a half laps sprint after completing five and a half laps behind a motorized pacer (derny). The pacer will start at 30km per hour and gradually increase the speed to 50km per hour, before leaving the track.

    The first round consists of 4 heats of 6 riders, with the first 2 riders from each heat advancing to the second round, and the remaining riders will go to the repechages. The second round consists of 2 heats of 6 riders, with the first 3 riders of each heat proceeding to the final for places 1-6, while the remaining riders will compete for places 7-12.

    Record: No records are kept for this event

    2004 Champions: Byan Bayley, Australia