Brumbies centre Pat McCabe has suffered yet another neck injury during his side's 27-14 victory over the Western Force on Saturday.
The Wallabies international first broke his neck during the nation's tour of Europe in November 2012, before re-injuring it against the British and Irish Lions in June last year.
The 25-year-old was making just his second Super Rugby appearance since recovering from that damage, but after medical examination just before half-time, he did not reemerge after the break.
McCabe was taken to hospital in a neck brace for scans, with head coach Stephen Larkham stating he hoped another serious neck injury would be ruled out by Sunday.
'We've taken him there as a precaution, we just want to make sure everything's alright with him,'' Larkham told Fairfax Media.
''He's getting a scan ... that's happening as we speak so I'm waiting to hear back from the doctor.
''He got through the first half okay.''
Fellow Wallaby David Pocock also gave Larkham cause for concern - the highly-rated flanker was, like McCabe, playing only his second Super Rugby match after reconstructive knee surgery last year ruled him out long-term.
Pocock limped his way from the field near the end of the Brumbies' win, but Larkham was confident the injury was minor.
''There was a bit of concern that he might have injured his knee, but he feels pretty good now,'' added Larkham.
''There's no pain, he's walking around fine, so we're hoping that's okay as well.
''We'll wait and see, the doctor's obviously with Patty at the moment and we'll wait until she gets back to make a further assessment on that, but I'm fairly confident that that one will be okay.''
Another high profile Wallaby, Hugh McMenamin, was stretchered from the field after injuring his neck while diving for the try-line shortly before half-time.