ADELAIDE faces an anxious wait to discover the extent of Mitch McGovern's left leg concern after the forward reported hamstring soreness just days before Friday night's preliminary final against Geelong. 

But the news is more positive for Cats defender Tom Stewart, with scans revealing no serious damage to his left hamstring. 

McGovern, who has kicked 20 goals from his 13 games this season, will have scans to determine the severity of the hamstring issue he picked up over the weekend. 

The 22-year-old missed nearly three months this season with a torn right hamstring he suffered in the Showdown against Port Adelaide in round three. 

Vice-captain Rory Sloane is expected to return from appendix surgery against the Cats after missing the qualifying final win over Greater Western Sydney. 

Sloane trained strongly in the club's closed training session at Football Park on Saturday. 

However, the Crows will be without defender Brodie Smith, who ruptured the anterior cruciate ligament in his right knee against the Giants. 

Stewart, meanwhile, experienced gradual hamstring tightness in Geelong's 59-point semi-final win over Sydney on Friday night and sat out the entire final quarter. 

The 24-year-old first went off the ground after using his burst of speed on the wing in an attempt to spoil a marking contest just before the halfway point of the third term. 

He returned later in the quarter, only to pull up tight again after spoiling Swan Callum Sinclair's attempted mark near the boundary. 

Stewart received further assessment in the rooms and took no further part in the game. 

Geelong released a statement on Sunday afternoon saying Stewart would face a fitness test in the lead-up to the clash with Adelaide. 

"I'm pretty confident in my body," Stewart said on Saturday when he had scans. 

"It was more precautionary from the medical staff in the context of the game. 

"When I did it late in the third quarter, they just said there's no real point going out there and doing any more damage." 

Stewart drew high praise in the second quarter for his repeated runs from defence, which culminated in a team-lifting tackle on Swans midfielder Luke Parker. 

Retiring Cats defender Tom Lonergan was a late withdrawal against the Swans due to food poisoning, with big man Rhys Stanley his replacement. 

Lonergan drove to the MCG hoping to take his place in the side, but went downhill again before the warm-up and was sent home. 

With Lonergan expected to return against the Crows, Cats coach Chris Scott welcomed the selection dilemma. 

"I thought he [Stanley] was really effective. Obviously Lonergan will come back so we'll have some headaches, which is a good thing," Scott said post-match. 

Midfielder Cameron Guthrie is racing the clock to be ready to take on Adelaide and speedster Nakia Cockatoo is another Cat hoping to prove his fitness. 

Guthrie suffered a low-grade right calf strain in the qualifying final loss to Richmond, while Cockatoo fell victim to his third right hamstring injury of the year in round 19 against Carlton. 

Greater Western Sydney defender Nick Haynes escaped serious injury after receiving an inadvertent boot to his right kneecap from West Coast forward Mark LeCras in a marking contest before three-quarter time. 

The 25-year-old fell to ground and was holding his sore knee for some time. 

Haynes played on momentarily and then made his way to the bench in the closing seconds, before starting the final term on the ground and finishing the game. 

The Giants take on Richmond in Saturday's preliminary final at the MCG.