IMPORTANT St Kilda forward Tim Membrey may again be unavailable as he continues to battle right knee soreness ahead of the Saints' clash with Geelong at GMHBA Stadium on Sunday.

Membrey was a late out ahead of the 49-point loss to Adelaide after copping a knock to the joint at training last Thursday, flaring an issue that has plagued him for some time.

He will be tested at training this week.

St Kilda coach Alan Richardson acknowledged the forward line struggled against the Crows last Saturday and forecast a reaction at the selection table.

Paddy McCartin and Josh Bruce have both struggled for form, having combined for five goals this season.

Athletic youngster Josh Battle booted three goals for Sandringham last Saturday in the Zebras' 21-point win against Footscray.

Ruckman Billy Longer will also be tested ahead of the Cats clash as he deals with a groin injury, although Rowan Marshall's impressive performance against Adelaide big man Sam Jacobs means the two-gamer will be tough to displace.

Courageous left-footer Daniel McKenzie will likely miss this week after suffering concussion in the VFL.