Why? According to officials, the man called “Pocket Rocketman: made the mistake of overtaking the derny just before it ...

And fans tuning into the action at home will have noticed a motorbike, called the derny, lapping around the track in the keirin, one of the blue ribband events in the Olympic cycling schedule.

The second involved Joachim Eilers (GER). All three were judged to have overtaken the derny," he said in an Instagram story. "I remember because I was in the pit of the velodrome with team manager ...