Injury-prone Sydney forward Nick Davis didn't even make it on to the training track as he was ruled out of Friday's AFL semi-final against St Kilda at the MCG.

The skilful goal kicker hurt a foot in last weekend's match against West Coast and the Swans' match committee decided against risking him on Friday, despite Davis being cleared of a fracture.

"After he had a scan, there was a certain relief there was no stress fracture, but if we put him out to train tonight, it could turn into a stress fracture," Sydney coach Paul Roos said.

However, Roos wasn't yet prepared to rule Davis out of any future finals games should the Swans prevail on Friday.

"Not at all. If he recovers sufficiently. I think he just needs to get out and train," Roos said.

"It's very hard after the season he has had to ask him to play in the circumstances when he can't train and there's a possibility of it becoming more serious."

Roos said if Sydney advanced and Davis was able to train pain-free by next Wednesday he would be considered for selection.

With the Saints also expected to be without a forward in Aaron Hamill, Roos suggested the Swans would go for a midfielder, rather than a forward to replace Davis.

"If you take on face value that Hamill is not playing, and I suppose at this stage you probably are, it would probably be unlikely we would bring another tall in, so it would probably be (midfielder Jarrad) McVeigh coming in."

While Davis' journey was interrupted, newly announced All Australian representative Brett Kirk was celebrating the end of a long and successful one.

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