A pectoral injury could rule out the midfielder for the rest of the year.
West Coast Eagles midfielder Matt Rosa could miss the rest of the season due to a pectoral injury sustained during his team’s 28-point loss to the Swans on Sunday.
Rosa left the game just before three-quarter time at Patersons Stadium and didn’t return to the game in the final quarter.
West Coast coach Adam Simpson said Rosa’s injury hampered the Eagles chances of defeating the high-flying Swans.
“It didn’t help,” he said.
“It felt like the game was telling us we needed to get our sub on a bit earlier.
“(Sam) Butler came on and had nine possessions and had an impact. Gov (Jeremy McGovern) had two touches so we thought we made that call. It didn’t help that Rosa hurt himself just before three-quarter-time.
“He is in a bit of strife, we think he has hurt his pectoral muscle.
“It will be multiple weeks.”
The Eagles’ loss leave them 11th on the AFL ladder and three wins outside the top eight.