Carlton has made four changes for Friday night's clash with Sydney at the SCG.

Andrew Walker, Lachie Henderson and Andrew Carrazzo all return from injury, while Nick Graham has earned a call-up after some consistent performances in the VFL.

But the Blues will be without skipper Marc Murphy, Bryce Gibbs, Chris Judd and Rob Warnock.

Gibbs (back) and Judd (knee) were ruled out earlier in the week, while Warnock has a minor hip injury.

 
Murphy made the trip to Sydney and trained with players at the SCG today, but has been ruled out with a tight calf.

David Ellard, Matthew Dick and Nick Holman have all been named as emergencies.
 
See photos of the Blues training at the SCG today

The match opens the AFL's Indigenous Round with Andrew Walker set to do the coin toss for the Blues to mark the occasion.

Carlton's team to take on Sydney:
 
Backs17. Sam Rowe43. Simon White42. Zach Tuohy
Half-backs27. Dennis Armfield13. Chris Yarran6. Kade Simpson
Centreline35. Ed Curnow44. Andrew Carrazzo23. Lachie Henderson
Half-forwards39. Dale Thomas1. Andrew Walker33. Andrejs Everitt
Forwards2. Troy Menzel41. Levi Casboult14. Liam Jones
Followers36. Cameron Wood28. Tom Bell9. Patrick Cripps
Interchange7. Dylan Buckley15. Sam Docherty32. Nick Graham
 22. Jason Tutt  
Emergencies31. Matthew Dick46. David Ellard20. Nick Holman
 
See Sydney's team here.