GWS and their captain Toby Greene gave the AFL and club record books a pounding with an extraordinary 14-goal third-quarter blitz in a 78-point win over Brisbane.
The Giants held a six-point lead at halftime, but their tsunami style swamped Brisbane in the third quarter, outscoring the Lions 14.2 to 0.3 on their way to a 26.10 (166) to 13.10 (88) win at Engie Stadium on Sunday.
The onslaught eclipsed the 13.4 Essendon kicked in the third term against Footscray in 1982 as the highest-scoring third term in VFL/AFL history.
GWS also registered their biggest ever score, going past the 25.12 (162) they posted against Essendon in 2023.
Greene, whose future has been the subject of much talk in recent weeks, kicked five goals, four of them in the third quarter.