Star flanker David Pocock is on track to play in the Brumbies' Super Rugby qualifying final against the Stormers at Newlands in Cape Town, but a question mark lingers over fellow Wallaby Matt Toomua.
Pocock missed the second half of last Saturday's loss to the Crusaders in Canberra after suffering a knock to the head and failing a concussion test.
He flew with the team to South Africa on Monday and participated in their first training session for the sudden-death match tomorrow.
"So he's on track to play," coach Stephen Larkham said. "He'll certainly be available for selection at this stage. "But every day he's got to tick a box, so he could fall back a day and he could miss the game."
Larkham was just as optimistic about playmaker Toomua, even though he pulled up sore on Tuesday after his 28-minute stint off the bench last Saturday. That was just his second game in eight matches following two separate ankle injuries.