Australia are rolling now.
All members of the attack have a wicket and Steve Smith has contributed a pair of very sharp catches.
Australia celebrate the wicket of Temba Bavuma.Getty Images
Australia’s bowling has been very tight and intelligent, accompanied by alertness in the field.
Skipper Bavuma was done by Lyon’s bounce when trying to reverse sweep, while Markram and Bedingham edged rising deliveries they tried to force through the off side.
The significance of Renshaw’s innings grows with every wicket.
South Africa are 4-99 from 31 overs, still 291 behind.