Hawthorn ruckman Simon Taylor has sustained a break to his lower leg in Saturday's pre-season match against North Melbourne at North Ballarat Oval.

Hawthorn's General Manager Football Operations Mark Evans said Taylor will be sidelined for the next four months.

"Simon underwent surgery this morning to have a plate inserted to repair a fractured fibula," said Evans.??

"Doctors have advised it will be two months until Simon can resume activity and it will be around four months until he will be available to play again."

Hawks midfielder Brad Sewell was also injured in the practice match against the Kangaroos. Sewell was taken to a local Ballarat hospital for scans to his shoulder at half time in that match, along with Taylor.??

"Scans have revealed that Brad has a broken collar bone," said Evans.??"He will have further assessment with a Specialist later this week, and we will know more then, but he will miss the first few week's of the season."