West Coast will be without premiership defender Tom Barrass for a major chunk of the AFL season because of his foot injury.
The Eagles have confirmed Barrass has a stress-related injury and there is speculation he will need surgery.
Barrass suffered the injury in their Western Derby win and he was taken out of the side for the weekend's upset loss at home to Port Adelaide.
"We're not confident it's going to be a short-term problem," Eagles' football boss Craig Vozzo told the club website.
"He's seeing a specialist tomorrow and then our medical team will gather (more information) and give us some advice as to the likely time out.
"We're fearing that it's going to be a reasonable period out of the game unfortunately."
Coach Adam Simpson said his team might stop training at Optus Stadium after Barrass became the latest Eagle to fall victim to the hard turf.
The Eagles have been plagued by foot and lower leg injuries over the summer, with Simpson thinking the damage has been caused by the hardness of Optus Stadium.
The $1.6 billion stadium came under fire last year because of its hardness, with Sydney star Lance Franklin missing three games with a heel injury that the Swans attributed to the hard turf.
West Coast currently have goalsneak Willie Rioli sidelined with a foot injury, while Elliot Yeo and Jamie Cripps battled toe injuries during the off-season.
In some good news for West Coast, they also said on Tuesday that Rioli is four weeks away from playing again.
Australian Associated Press