Adelaide have named veteran tall Andy Otten to replace hamstrung forward Mitch McGovern for Friday night's AFL preliminary final clash with Geelong.
The Crows also regained Rory Sloane for the Adelaide Oval clash after he missed the qualifying-final win over Greater Western Sydney following emergency appendix surgery.
Otten, 28, last played at AFL level in the round-19 draw with Collingwood.
The Cats have made two unforced changes with Nakia Cockatoo and Tom Lonergan replacing James Parsons and Zach Guthrie.
Hamstring injuries have restricted Cockatoo to 10 games this season, having last played in round 19.
Guthrie and Parsons are emergencies along with Jordan Murdoch, while the Crows' emergencies are Wayne Milera, Alex Keath and Reilly O'Brien.
In Saturday's match at the MCG, Richmond and Greater Western Sydney have gone with unchanged sides, which means GWS veteran Steve Johnson keeps his spot.
After missing the qualifying final loss to Adelaide, Johnson cast aside doubts about his troublesome knee and tapering form to kick six goals in last week's big semi-final win over West Coast.
Devon Smith has missed both GWS finals with a knee injury but is named as an emergency with Harry Perryman and Sam Reid.
Shai Bolton, Corey Ellis and Shaun Hampson are the emergencies for Richmond.
