The undermanned Cats took the fight right up to the home team in the early going, booting the opening five goals of the game. But that was the end of the penny section for the visitors.
The Scorpions regrouped and kicked 13 of the next 17 goals in a complete reversal of the game's opening.
After the break, it was total dominance, with the Cats barely getting a sniff.
Acting captain James Wall continued to provide great leadership, while Kyle Matthews recovers from his hamstring injury.
Although the visitors fielded a depleted line-up, Casey was also missing some handy performers in addition to Matthews, who coach Bradley Gotch last week described as "the heart and soul of the place."
In the absence of the injured players, the Scorpions welcomed youngster Aiden Lindsay (Gippsland Power) and Kieran McShane from the Box Hill Hawks to the fold.
Next week Casey travels to Port Melbourne for what promises to be a tough encounter against one of the competition's traditionally strong stand alone clubs.
Casey Scorpions 1.1 4.6 8.13 13.14 (92)
Geelong 5.2 7.6 7.8 9.11 (65)
GOALS
Casey Scorpions: Newton 5, Evans 2, Lawrence, Lindsay, McGough, Nicholson, Riseley, Wall
Geelong: Corrigan, Walker 2, Barham, Cowan, T Selwood, Sheringham, Simpson
BEST
Geelong West Cowan McLean Corrigan Barham Tutungi
The Casey Scorpions started slowly and lost their reserves game against an accurate Northern Bullants by 20 points at Visy Park. Mark Weeks and David Bell were the team's best.
Casey Scorpions 0.1 3.4 8.12 12.16 (88)
Northern Bullants 7.1 11.3 14.4 17.6 (108)
GOALS
Casey Scorpions: Dowse 4, Gent 2, Allen, Carew, Cleven, Fitzpatrick, Harrison, Purdy
Northern Bullants: Church 4, Toman 3, Arrowsmith, Labi, Lincoln 2, Bray, Caspersz, Dorman, Way
BEST
Casey Scorpions: Weeks, Bell, Tynan, Salton, Harrison, Dowse
Northern Bullants: Toman, German, Arrowsmith, Overman, Lincoln, Church