Errol Gulden is the latest star casualty in the AFL pre-season, with the Sydney midfielder suffering an ankle injury early in the Swans' win over Gold Coast.
In a night of injury chaos at People First Stadium, the dual All Australian was tackled by Will Graham and his ankle twisted awkwardly under him.
Gulden was in agony as trainers helped him from the ground, amid speculation it could be a syndesmosis injury.
"It is disappointing, he's off getting some scans at the local hospital. We won't get those results back for another 24 hours. He's in a bit of pain," Swans football boss Leon Cameron told Fox Footy at half-time.
Gold Coast key position player Mac Andrew did not last the opening minute on Friday night, forced off with a chest injury after a collision with Sydney's Taylor Adams in the first marking contest of the match.
Suns teammates Charlie Ballard (ankle), David Swallow (knee) and Lachie Weller (hamstring) were also taken out of the game after they were hurt.
Gold Coast kicked the first three goals of the last quarter and pulled to within four points, but the Swans kicked clear with their own three-goal run to win 12.12 (84) to 8.15 (63).
"We're not quite sure how many bullets we've dodged," Suns coach Damien Hardwick said.
"It was a bit of a night of carnage, unfortunately, for us - it's hard to sit there and take a little bit out of the game when you're trying to put pieces of the puzzle together. A tough night..
Already on Friday, Port Adelaide confirmed Zak Butters is out for at least six weeks after knee surgery and Western Bulldogs captain Marcus Bontempelli will have a similar spell because of his calf muscle injury.
Despite fielding an undermanned team, Sydney kicked the first four goals of the game and were never headed.
Former key defender Tom McCartin impressed in his new role as a forward, kicking four goals.
New Suns captain Noah Anderson racked up a game-high 35 disposals, with nine clearances, while Matt Roberts (27 possessions) was prominent for Sydney.
The Suns had plenty of chances, but were wasteful in attack through the third term and losing Andrew at the start of the game clearly hampered their forward structure.
They did not kick a goal from late in the second term until early in the last.
Swans captain Callum Mills (foot) will miss their opening round home match next Friday against Hawthorn, while ruckman Brodie Grundy is in doubt with a knee injury.
Several Sydney stars were rested for the Gold Coast game, including Isaac Heeney, Chad Warner and Dane Rampe.
