“Inside the Closed Society of World Snooker Championship Competitors”

The players who compete for the world snooker title in Sheffield from Saturday form a closed society. World Cup debutants usually drop out early, and some of the participants have been the same for decades. Former world champions Mark Selby and Neil Robertson are competing at the World Championships for the 19th year in a row, and John Higgins for the 29th time en suite. Oscillating between genius and madness, living legend Ronnie O’Sullivan has been at it non-stop since 1993.