Steve Johnson has wound the clock back in a 67-point win over West Coast, booting six goals as Greater Western Sydney stormed into an AFL preliminary final.

The Giants clinically ended the Eagles’ season – and careers of Sam Mitchell, Matt Priddis and Drew Petrie – with a 19.11 (125) to 9.4 (58) win at Spotless Stadium.

The result in the semi-final means the top-four sides have all progressed to the penultimate week of the season.