Simpson and Lawry mastered the bowling with such purpose that they batted throughout the first day for 263, and, on the next, became the first opening pair in Test history to score double centuries in the same innings.
Their stand of 382, only 31 short of the world Test record, by V. Mankad (231) and P. Roy (173) for India v New Zealand, 1955-56, represented a complete transformation of all that had gone before in the series.
Griffith was cautioned for his excessive use of bumpers by Umpire Kippin, restored after the troubles at Georgetown, and the West Indies' discomfort was complete when Cowper added his century with almost distainful ease.
Simpson declared with five wickets down at 650, and the West Indies' much shaken pride was further injured with Davis was quickly dismissed. Hunte was hit in the face attempting to hook Hawke and had to retire.
The crisis brought out the vintage Kanhai. Nurse gradually won control and scored the third double century of the match. Their efforts, plus those of Hunte and Sobers, would not have been enough without a valiant half-century by Griffith.
Australia finished only 77 on, and with time running out, Simpson had no alternative but to gamble and declare early in the second innings. West Indies had to get 253 in four and a half hours. Hunte and Davis made 145 in ten minutes under three hours, a West Indies first-wicket record against Australia, but when Kanhai was out 106 were needed in ninety minutes... then 70 in fifty-five... and down to 28 in sixteen.
By then Simpson had eight defending the boundary, and despite a gallant effort by Sobers, the West Indies fell 11 runs short with five wickets left in as thrilling a finish as any could wish to see. The result meant the rubber for the West Indies.