It is not often you hear the favourite booed for winning a race. Yet that is exactly what happened yesterday at Cheltenham as Delta Work galloped past stable mate Tiger Roll to take the Cross Country Chase by three quarters of a length. Ultimately, the fact that the dual-Grand National hero Tiger Roll, a five-time festival winner, and perhaps the most popular horse in the sport, was denied a perfect career finale in such agonising fashion felt like an injustice. In Wednesday’s other much-anticipated race, Willie Mullins filled the last notable gap in his big-race CV when Energumene finally gave him success in the Betway Queen Mother Champion Chase. After rival Shishkin was pulled up at the eighth fence and Chacun Pour Soi blundered and shot Patrick Mullins out of the saddle at the next obstacle, what was one of the festival’s most hotly anticipated races turned into a damp …