CARLTON defender Zac Williams is expected to be sidelined for an extended period with a calf injury.

Williams was subbed out of the game at quarter time of Sunday’s win over the Giants.

He underwent scans on Monday afternoon which confirmed a high-grade calf strain, that will sideline Williams for the next 10-12 weeks.

“We took the time to get Zac back to Melbourne and get a scan today to assess the injury fully, which unfortunately has confirmed he will be out of the side for an extended period,” Carlton Head of Football Brad Lloyd said.

“Zac is understandably disappointed given the work he’s done to get himself playing good football and performing an important role as part of our back six.

“We’ve had a number of personnel changes over the opening nine rounds but to the players’ credit they have adapted and there will be another opportunity for someone to step up and take their chance at senior level.”