Adelaide has named its 26-man extended squad ahead of its must-win clash with the Western Bulldogs on Sunday.

Defender Alex Keath has been named after a successful return from injury in the SANFL last weekend.

Riley Knight, who was a late withdrawal from last week's game with a hip injury, was also included after he passed his fitness test at Adelaide's main training session.

Midfielder Hugh Greenwood and defender Andy Otten round out the four additions to the squad.

Jake Kelly has also been named after overcoming a shin injury he sustained in Round 22.

Adelaide's final team will be named at 4.30pm ACST on Friday.

The Crows will face the Bulldogs at Mars Stadium in Ballarat on Sunday from 1.10pm AEST.

The game will be broadcast live on Channel 7 Adelaide and Fox Footy from 12.30pm ACST.

Adelaide’s Round 23 squad is…

IN - Greenwood, Knight, Otten, Keath