SWANS defender Aliir Aliir faces a nervous Grand Final week after suffering a game-ending knee injury in Friday night's preliminary final win over Geelong at the MCG.
Aliir landed awkwardly after a marking contest with Cat Lincoln McCarthy late in the first quarter, and appeared to hyperextend his right knee.
• Every Swan rated: Rohan completes remarkable finals comeback
The Swans defender had tape applied above and below his knee at quarter-time, and did some run-throughs along the boundary line early in the second term.
Despite moving more freely by the end of his fitness test, Aliir's night was over before half-time when he applied an ice pack to his knee late in the second term.
• Winged Swans face Grand Final selection headaches
With the Swans winning by 37 points, the 22-year-old faces a race against time to prove his fitness for next Saturday's Grand Final.
Coach John Longmire said the Swans would have to assess Aliir in the lead-up to the season finale.
"He's a bit sore. He landed a bit awkwardly and we'll have to see how he is," Longmire said.
The Swans coach gave little away when asked whether Aliir would be replaced with a tall if he was ruled out, saying he didn't deal in "ifs, buts and maybes".
Swans co-captain Jarrad McVeigh (calf) will also be striving to prove his fitness after being ruled out of Friday night's game.
• Match centre: full coverage, stats and highlights