Steyn's warning for Australia
Dale Steyn has warned he has saved his best for last as South Africa prepare for the decisive third Test against Australia.
The Proteas have headed west still level in the series despite being outplayed for large periods during the drawn matches in Brisbane and Adelaide.
Only a stubborn final-day century from Test debutant Faf du Plessis denied Australia victory in Adelaide earlier this week to give the Proteas hope they can yet snatch just their second Test series win Down Under.
Steyn is regarded as the world's best bowler but has struggled since arriving in Australia, taking just five wickets at an average of 51.6.
The 29-year-old quick is determined, however, to prove why he has become such a feared force and bowl his side to victory on the hard and fast WACA Ground wicket.
"We didn't come down to Australia to draw," he said. "Australia have thrown everything they can at us and they still haven't beaten us.
"If we can play to what our potential is I think we're going to go home 1-0, and that would be fantastic.
"I always pride myself on standing up and doing something when we really need it and hopefully in this game something like that can happen.
"I'll do everything I can in this game to try and get a result and get the wickets to win this Test match."
Australia, who have to win in Perth to go top of the rankings, are set to recall all-rounder Shane Watson for his first Test on home soil since the 3-1 Ashes defeat two years ago.
Watson has been sidelined by a calf injury picked up on Sheffield Shield duty prior to the series.
He was set to play as a batsman only in Adelaide but, after sitting out an extra week, believes he is now ready to grab the ball too and help an Australian attack still recovering from their final-day exertions in Adelaide.
"Over the last week I've been gradually building up my running and my bowling," Watson said. "I bowled six overs in the nets yesterday before we left in Adelaide so I'm certainly going to be up to bowling as many overs as Michael [Clarke] wants and probably the normal sort of workload really that I bowl in a Test match.
"Things have progressed really well over the past week so I'm ready to go."
Both sides could opt to employ four-pronged pace attacks on a wicket suited to the fast men.
Australia demolished India in just over two days in Perth earlier this year after utilising four quicks, meaning Mitchell Starc and Mitchell Johnson could come into the frame for off-spinner Nathan Lyon and the injured James Pattinson.
South Africa are unlikely to retain leg-spinner Imran Tahir after his dismal Adelaide Test, with the tourists hopeful Vernon Philander can return after pulling out on the eve of the match with a back complaint.
All-rounder Jacques Kallis, who injured a hamstring on the opening day of the second Test, will play despite medics confirming he will be unable to bowl.