 At four Commanche Run went on to win two Group One races, capturing the Benson & Hedges Gold Cup, Irish Champion Stakes making three in total with the Classic St. Leger Stakes.He had also been a runaway winner of the Group 3 Brigadier Gerard Stakes at Sandown Park on his first run of the year .He was then third in the Prince of Wales’s Stakes after a duel with the top class filly Pebbles which saw them surprisingly beaten by an outsider Bob Back .Commanche Run was withdrawn before the start of the Eclipse Stakes at Sandown Park in early July won by Pebbles and the injury he had sustained there prevented him from running in the King George VI and Queen Elizabeth Diamond Stakes in late July.In the Benson and Hedges Gold Cup at York ridden from the front by Piggott he beat a top class field including the fillies Triple Crown winner Oh So Sharp and multiple Group 1 winning filly Triptych with Palace Music the winner of the previous year’s Champion Stakes and Bob Back well behind.