Track racers Pim Ligthart and Rob Hayles have been cleared to return to racing on Friday after being barred from the UCI World Track championships in Manchester in March for returning irregular blood values.
Hayles, a former World Champion had a haematocrit just over the 50-percent limit in a test the day of the first session, while Ligthart had irregular reticulocytes due to a virus, according to his federation.
