The North Melbourne Tasmanian Kangaroos have suffered an early blow on the eve of the 2023 season, with experienced onballer Jenna Bruton being ruled out for 3-4 weeks with a calf strain.

The 55-gamer played all 13 games last season, averaging 17.8 disposals and 4.2 tackles through midfield, but will miss this year's opening rounds.

"Jenna presented with calf tightness during training last week, which on further investigation was found to be a small calf muscle strain," AFLW head of physical performance Alex Veitch told NMFC Media.

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Defender Hannah Bowey also has an expected return date of 3-4 weeks, as she deals with a bone stress issue.

"Hannah is currently in a reloading phase following bone stress in her shin," Veitch said.

"She will integrate into training over the coming weeks as we look to build her back to match loads."

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Pacey forward Zoe Savarirayan continues to work her way back from an ACL injury suffered back in March.

She's "tracking very well", has returned to running and is completing regular conditioning sessions.

"Her attitude to her rehab has been first class which is a testament to her professionalism as a young player," Veitch said.

"She recently completed a strength testing battery to assess her progress up to this point and we are really pleased with her progress."

The Kangaroos will kick off their campaign on Sunday, September 3 at Blundstone Arena against the Saints.

The Round 1 match will be non-ticketed, and free for all fans to attend.