Hawthorn skipper Jarryd Roughead has undergone surgery on his left knee, meaning he will miss three weeks of pre-season.
The four-time premiership player reported "low level swelling" in the area last week and it was decided by the club and medical experts that a "minor clean up" of the knee was the best course of action.
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On Monday the Hawks left for a pre-season camp in New Zealand which Roughead will miss out on.
"We found out that Jarryd requires a minor clean up procedure which means that he's is likely to be out for the next 2-3 weeks," Hawks general manager of football operations Jason Burt said.
"This is obviously disappointing for Jarryd to miss out on pre-season camp however he remains positive and will now concentrate on his rehab.
Roughead missed the first half of the 2016 season after injuring the PCL in his right knee which required a reconstruction. He then missed the rest of the season due to a cancer diagnosis because of a melanoma on his lip.
He returned to captain the Hawks in 2017 and did not miss a match for the season.
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