Paul Nicholls had to wait until the penultimate race of the whole meeting but Salubrious got the champion trainer off the mark at Cheltenham in the Martin Pipe Conditional Jockeys' Handicap Hurdle.
Ridden by his nephew Harry Derham, he coasted into the lead rounding the turn for home but began to idle.
Double Ross made a bold bid from the front in an effort to give Nigel Twiston-Davies another winner and despite being passed he rallied again for Adam Wedge before running on empty.
Nagpur flew from the back to grab second off Double Ross some seven lengths behind the 16-1 winner.
Make Your Mark stuck on to claim fourth for Willie Mullins.
The red-hot favourite Gevrey Chambertin (9-4), trained by David Pipe, was in trouble from a long way out and never figured.
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