This is the overall all time ranking of the most successful professional cyclists in the world since 1869 filtered on riders that have been in competition in the same era as Donal O'Halloran (1991-1991). Riders score points based on their results in the races. These points depend on the (historic) importance of the race, the competition during the race and the toughness of the course. Click on any rider to get an all time overview of the rider with details on the scores and rank for the various seasons and the most important results for each year.