Inglis century and Starc strikes give Australia the upper hand
Australia seized control as Inglis scored a brilliant century and Starc ripped through the opposition, leaving South Africa struggling at 40 for 4 despite Ackerman's fighting fifty.
Cricraze Desk
Australia grabbed a firm grip on the contest as a brilliant century from Inglis anchored their batting innings.
Adding to the momentum, Starc delivered a fiery spell with the ball to dismantle the top order.
South Africa fought back through Ackerman, who compiled his second fifty of the Test match.
However, Lyon struck late in the day to deepen the visitors' troubles.
The late breakthroughs left South Africa effectively struggling at 40 for 4 by stumps.