“Four-time champion John Higgins has appeared at every World Championship since his tournament debut in 1995, but admits his 30th attempt at winning the sportu0027s biggest event this year could be his “final go” at conquering the Crucible. Higgins lost 10-7 to Mark Allen at the 12-man Tour Championship having led 4-1 and cast doubts over his future by describing his performance as “not good enough”.”