Geelong has ruled out captain Joel Selwood from Saturday night's match against the GWS Giants at Spotless Stadium.

“Player wellbeing is always first priority and in this case, club medical staff have advised against Joel taking to the field tonight,” Geelong’s general manager of football Steve Hocking said.

Rookie Sam Simpson will make his AFL debut tonight. The 19-year-old was elevated to the senior list on Thursday after six games at VFL level.

Simpson was selected by the club under the father-son rule in the 2016 AFL Draft.

Greater Western Sydney v Geelong at Spotless Stadium, 7.25pm AEST

GREATER WESTERN SYDNEY
In: J.Kelly, D.Smith, R.Lobb
Out: T.Taranto (ankle), H.Himmelberg (finger), D.Lloyd

GEELONG
In: L.Henderson, Z.Smith, A.Black, Z.Guthrie, S. Simpson
Out: S.Selwood (hamstring), T.Stewart (facial fracture), G.Horlin-Smith (ankle), D.Lang (leg), J. Selwood
New: Zach Guthrie (Calder U18), Sam Simpson (Geelong U18)

CATS TEAM

Backs: Andrew Mackie, Tom Lonergan, Jed Bews

Half-backs: Zach Tuohy, Lachie Henderson, Jake Kolodjashnij

Centres: Cameron Guthrie, Mark Blicavs, Jordan Murdoch

Half-forwards: Sam Menegola, Harry Taylor, Daniel Menzel

Forwards: Steven Motlop, Tom Hawkins, James Parsons

Followers: Rhys Stanley, Mitch Duncan, Patrick Dangerfield

Interchange: Aaron Black, Sam Simpson, Zach Guthrie, Zac Smith

Emergencies: Wylie Buzza, Timm House