Kenny, who earned selection for the individual sprint at the London 2012 Olympics in favour of Hoy before winning gold in it as well as the team sprint with him, dominated day one in the Netherlands.
He won the team sprint with Hoy, the 200m sprint and the sprint finals and was second in the keirin to lead the Giant Sprint Masters with five points, two clear of Hoy.
Day two began the same with Kenny and Hoy, who became Britain’s most successful Olympian with a fifth and sixth gold at London 2012, beating Teun Mulder and Gregory Bauge in the team sprint.
Kenny then won the 200m sprint and Hoy took victory in the sprint finals before the triple Olympic champion crashed in the keirin to delete the race completely.
Despite his crash in the keirin Kenny still leads overall with nine points with Hoy second with 11, Mulder third with 19 and Bauge fourth with 23 with four more days of racing still to go at the Six Days of Rotterdam.