The Dons’ early season injury curse has struck again after it was confirmed that Mason Tonks fractured his leg in Sunday’s win over Barrow Raiders.
The in-form second rower is now expected to be out for 8-10 weeks.
Head coach Gary Thornton said: “It’s a massive disappointment to lose Mason after he has been playing so well week in week out.
“He has worked incredibly hard in pre-season to get back playing following major knee surgery at the end of last season, so to get another long term injury is a massive setback for the lad.
“He has been in great form and a huge part of our strategy going forward. His partnership with Jason Tali on the left was showing some promising signs of being a potent threat for our attack.
“I hope he has a speedy recovery and comes back even stronger. He’s done it before so hopefully he can do it again.”