Australia presses advantage as Smith screamers unravel Proteas. But time is the issue

• What is it that separates the best cricket teams from the merely good ones?
• There were hints sprinkled throughout an absorbing day three of the Durban Test, in which Australia's most formidable obstacle on the path to victory is now time.
• All the fundamentals Australia had to get right with the ball today, it did: tight lines, safe hands, bowling in partnerships to coherent plans.