SYDNEY has confirmed that Nick Blakey will not play again this season after sustaining a crack to his right fibula during the third quarter of Saturday’s match against North Melbourne. 

The club said it was seeking specialist advice on the best course of treatment for the injury and surgery was an option.

It is a significant blow for the Swans with the speedy Blakey now a key defensive weapon for the team.

Swans football manager Charlie Gardiner said he was extremely disappointed for Blakey who had "played his way into some really strong form" since moving to the backline this season.

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"We're very disappointed for Nick and for us. His back end of the year, since we moved him to half-back, has been getting better every week,” coach John Longmire said on Monday.

"He was learning the craft of playing in defence and getting better every week, so it’s really disappointing for him that he's out for the rest of the season and for us.

"He was getting to be a really valuable asset across half-back."

The Swans are expecting better news for co-captain Josh Kennedy who will have scans on Monday afternoon after feeling tightness in his hamstring in the final minute of clash with the Kangaroos.

The club believes Kennedy has a very low-grade hamstring that will rule him out for the match against Gold Coast but might allow him to be available the following week to play in an elimination final.