Wallabies and Brumbies winger Henry Speight is expected to be out of action for eight weeks and may need surgery for a bone fracture above his eye.
Speight suffered the injury when he collided heads with Brumbies teammate Christian Lealiifano during his team's Super Rugby loss to the Stormers in Cape Town on Saturday.
X-rays revealed the extent of the damage, which is not only a blow for the Brumbies, who are leading Super Rugby's Australian conference, but also for Speight's preparation for Australia's Sevens campaign at the Rio Olympics.
He is a relative newcomer to sevens and, by the time he returns, there will only be two rounds of the Sevens World Series remaining before the Rio Games.
Speight was returning to Canberra on Tuesday to meet with surgeons who will assess the damage.