Why are there so few repeat Gold Cup winners?

Al Boum up against it in bid to produce another picture-perfect moment, writes Darren Norris.

WHAT have Don Cossack, Long Run, Imperial Commander, Denman, Dawn Run, and Burrough Hill Lad all got in common? If you answered they were all seriously impressive winners of the Cheltenham Gold Cup you’d be right. But they, like so many other Gold Cup winners, have something else in common too: None of them won the festival blue riband a second time.