Wallabies and Rebels utility back James O'Connor could miss the next six weeks of Super Rugby and could even miss Australia's Test against Scotland due to a liver injury.
O'Connor will stay under observation in a Sydney hospital for the next few days and is expected to miss the up to six weeks due to a lacerated liver.
Twenty-one-year-old O'Connor was accidentally kneed by Waratahs five-eighth Berrick Barnes as they both went for a ball in the air and it was suspected that he had rib damage but have scans revealed bleeding in his liver.
The injury means that he is unlikely to play again until the Rebels match in Melbourne against the Brumbies on June the 1st and as he will lack game time he is unlikely to be named by the Wallabies who play Scotland four days later in Newcastle.
The Wallabies then have a three match Test series against Six Nations champions Wales starting in Brisbane on June 9 so he could be eased back in through the bench.
O'Connor had his first meal on Monday and is awaiting the all-clear from his hepatobiliary specialist so that he can fly back to Melbourne.
Wallabies doctor Warren MacDonald has been in contact with the Melbourne medical team and confirmed O'Connor won't resume contact training for six weeks.