Hawthorn defender Lachie Bramble will miss the start of the new season but the Hawks are hopeful of a swift return from a foot injury,
The 23-year-old sustained a stress fracture during a practice match against Collingwood last weekend and Hawthorn - who are to finish in the top four this season - are anxiously waiting to see how the problem settles down over the next couple of weeks.
Hawks physical performance manager Luke Boyd told the club's official website: "Lachie developed some foot soreness towards the end of the game, post-game he was quite sore.
"We had a bit of a look at that and upon further investigation, unfortunately for Lachie, it revealed that he has a stress fracture in his foot. What that means from here is he won't be available for Round 1.
"The next couple of weeks will give us a pretty good indication of how he settles and how long we expect Lachie will be out for."
Meanwhile, Collingwood have also suffered an injury setback ahead of the new campaign, with rookie defender Cahrlie Dean having also picked up a foot injury.
The 20-year-old has suffered a fracture and will see a specialist to found out a full diagnosis of the problem.
Magpies football manager Graham Wright confirmed: "We will know more once Charlie has seen the specialist.
"But we are expecting that his recovery will keep him out of the selection frame for a number of weeks."