South Africa's injured opener Dean Elgar is expected to bat in Durban, where his side face an intimidating run-chase against Australia.
Steve Smith's team will resume at 9-213 on day four of the four-Test series opener, holding a 402-run lead.
Elgar trudged off the field at Kingsmead on day three, having dislocated his right pinky finger while holding the catch that dismissed Mitchell Starc.
Elgar received treatment in the rooms, but the dodgy digit is now back in place and the hosts are confident he will be be fit enough to face Starc's chin music.
"Dean is a tough cookie," South Africa's assistant coach Malibongwe Maketa said.
"He was really keen to go back out there and to bat. There's no concern about him."
Elgar has suggested in the past that batting through pain is something that brings out the best in him.
"It puts me in a different mindset," he said last year.
"It's like the challenge is a little bit more. I guess only an opening batsman could see it that way."
The Proteas have recently endured a rotten run on the injury front.
Faf du Plessis, AB de VIlliers and Quinton de Kock all recovered from setbacks to take their place in the XI for the first Test.
Veteran paceman Dale Steyn (heel) and Temba Bavuma (finger) remain on the sidelines, although the latter could return for the second Test in Port Elizabeth that starts on Friday.
Part-time spinner Elgar enjoyed a productive day with the ball on Saturday, dismissing Steve Smith for the second time in his career.
