Sydney are confident Jarrad McVeigh has avoided damage to his knee and will be available to play in the Swans' cutthroat final on Saturday night.
The club's medical staff believe McVeigh has suffered no more than a knock or a twist after landing awkwardly in a tackle from Brad Hill during the dying stages of the qualifying final defeat to Hawthorn on Friday night.
McVeigh was in discomfort after the game but appeared to be walking freely at the airport upon the team's arrival back in Sydney on Saturday. His condition improved further on Sunday.
''He should be OK. I spoke to him today and he reckons his knee went to wrench and he let it go before he did any damage,'' Swans coach John Longmire said.
''He was a little bit sore yesterday but a lot better today. He said it should be fine.''
The loss of McVeigh, their captain and one of five All-Australian nominees this year, would be a huge blow for a club already reeling from the effects of a wretched run with injury. He has been one of the Swans' most consistent players this season across half-back and in the midfield.
Adam Goodes trained well with the reserves on Sunday, Longmire said, but the availability of the dual Brownlow medallist for the semi-final will be determined by his performance on the track this week.
The Swans' path to the grand final is now a treacherous one as it could include a trip to Perth to tackle Fremantle should they win next week.
That should happen if history is a guide. Since the implementation of this finals system in 2000, 24 of the 26 qualifying final losers have bounced back the following week.
Only Port Adelaide, in 2001, and West Coast, in 2007, have made straight-sets finals exits.
A similar fate could await if the Swans continue to be overrun by their opponents. Longmire's men have lost four of their past five games with a common trait being their inability to run out the game.
In those four defeats, they have been outscored by an average margin of five goals after half-time.
Highlighting how much the Swans fell away in the second half on Friday, they had 17 players register fewer than eight possessions compared to just four from Hawthorn.
It prompted Longmire to question his side's depth, which has been sorely tested by the club's long injury list this year.
''I thought the first half was typical finals footy, there was nothing in it,'' Longmire said. ''It was a real pressure game from both teams and we couldn't sustain it. That's what our challenge is.
''Hawthorn were able to do it and we weren't. We need to be better than that. A week before we did it for three and a bit quarters, we only did it for a half on the weekend and that's not enough to win a finals game.''
Former Brisbane coach Michael Voss said it was clear the Swans had lost their drive, particularly from half-back.
McVeigh, Nick Malceski, Dane Rampe and Andrejs Everitt, who were providing strong rebound in the first half, were among those who fell away as the game wore on.
''They just didn't get that run,'' Voss said on Channel Seven's AFL Game Day. ''That was a real concerning stat for mine. Just not [getting] that outside spread, certainly in close they're as good as they've ever been.''
The Swans reserves did not play at the weekend, but among those in line for a recall next week are Brandon Jack, Jed Lamb, Shane Biggs, Harry Cunningham and Mitch Morton.