Gordon Elliott completed a famous Cheltenham treble with Tiger Roll in the JT McNamara National Hunt Chase.Winner of the Triumph Hurdle over two miles in 2014, the Gigginstown House Stud-owned gelding was sent off at 16-1 for this four-mile test.The seven-year-old was pulling rider Lisa O'Neill's arms out running down the hill and picked up from the home turn for a ready three-length success.Missed Approach was second ahead of Haymount in third.O'Neill said: "It's surreal, to be honest. It's an overwhelming feeling."I was just hoping up the hill that there was nothing there to pass me."It's a good team effort and it's absolutely brilliant."Elliott, who was following on from the earlier victories of Labaik and Apple's Jade, said of the jockey: "She's decent and is an absolute star."She pre-trains our horses and does everything for us."She's an absolute star and I'm delighted for her."