Cape Town - Australian opener David Warner says he is disappointed to see Proteas quick Dale Steyn ruled out of the series.
Steyn broke down with a shoulder injury in the over after he dismissed Warner for 97 on day two of the first Test in Perth on Friday.
Scans later revealed a fracture, and Steyn has since been ruled out of the series.
"I am disappointed for Dale. All the amp and the talk in the series so far ... I know how pumped he would have been to play a big role for his team," Warner said on Friday.
"It's disappointing for him. I just hope he can get back on the park and play competitive cricket again like we know he can."
The Proteas, who are currently 104/2 in their second innings with a lead of 102, now only have Kagiso Rabada and Vernon Philander as seam options in the second innings.
Warner, though, saw enough in his side's first innings collapse to know that both of those bowlers remain a threat without Steyn.
"We have to respect each individual that is selected in their team,"said Warner.
"They still have to very good fast bowlers still there and we've seen the wickets they're capable of with the ball going both ways.
"We can't look too far forward. We have to bowl well first tomorrow.
"We know that if you get through that first period with the new ball they can only revert back to spin. We have to knuckle down and apply that pressure on their two frontline bowlers."
Play on day 3 gets underway at 04:30 (SA time).