GREATER Western Sydney defender Phil Davis faces a Wednesday fitness test to prove himself for the first Sydney Derby on neutral territory.
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With the Giants and Swans preparing for Thursday's date at Optus Stadium while in quarantine, it's GWS with the biggest fitness headaches.
Davis injured the medial ligament in his left knee during last week's nailbiting win over Essendon, but the former skipper remains a chance to tackle the Swans.
"We'll give Phil till tomorrow's captain's run," coach Leon Cameron said on Tuesday.
"He'll be touch and go. If I had to put a percentage on it, it'd be probably 60-40. If he doesn't improve on that, clearly we won't play him.
"He's always had a way of finding to get up, he's durable, (but) his knee's been a bit sore. We'll most likely go in unchanged if he gets up."
Superstar Toby Greene remains a chance for the round 13 clash with West Coast on Sunday August 23 – the day after the Giants finish their 14-day quarantine period.
"He is on track for the week after, but he's trying to push to play this week," Cameron said of Greene.
"We're going to take a cautious approach."
The Giants and Swans will have a 'bye' during the current round 11 before kickstarting round 12 with their unique clash.
"No matter what the preparation or where it is, there's still a game of footy to be played," Swans coach John Longmire said.
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Longmire said the Swans weren't expected to have any players return from injury to face the Giants and was unable to put a timeframe on Lance Franklin's return from a hamstring injury.
The Swans hold an 11-7 lead in Sydney Derby's, however they have lost the past three games to the Giants.