The Waratahs are likely to be without Wallaby number eight Wycliff Palu for Saturday's match against the Stormers in Cape Town.
Both Palu - who rolled his ankle against the Sharks last week - and winger Alofa Alofa are almost certain to miss the Waratahs' second tour game at Newlands as injuries begin to take their toll.
"[Palu] is still very swollen.. so I am planning without him," said coach Michael Cheika.
There is also some doubt hover over Kurtley Beale (whiplash) and with Rob Horne serving a one-week suspension, the 'Tahs are running low on backline options.
"We're starting to get a bit low on stocks there in the backs," added Cheika.
"We haven't been too bad with injuries so far, compared with some of the other teams, so that's part and parcel with what happens. We're lucky we have good depth and players who can mix in."
The good news for 'Tahs fans is that Israel Folau is set to return having arrived in South Africa on Sunday after his departure was delayed by a throat injury.
"I'm feeling pretty good actually. My throat's feeling fine and there's nothing really I'm too worried about," Folau told AAP.
"I'm more than half a chance to play."
There are a handful of other players nursing niggles after a bruising encounter with the Sharks and as a result Cheika has delayed naming his team by a day.
"It was a very, very physical encounter," said Cheika.
"We're giving everybody an extra day to get on top things."