Gallery: Proteas v Australia

South Africa's Dale Steyn celebrates the wicket of Australia's Michael Clarke (not pictured) during the fourth day of the second cricket Test match in Port Elizabeth. REUTERS/Rogan Ward

South Africa's Dale Steyn celebrates the wicket of Australia's Michael Clarke (not pictured) during the fourth day of the second cricket Test match in Port Elizabeth. REUTERS/Rogan Ward

South Africa's bowler Dale Steyn, top right, celebrates with teammates after dismissing Australia's captain Michael Clarke, left, for 1 run on the fourth day of their second cricket Test match at St George's Park in Port Elizabeth. Photo by: Themba Hadebe/AP

South Africa's Dale Steyn celebrates the wicket of Australia's Brad Haddin (L) with Robin Peterson looking on during the fourth day of the second cricket Test match in Port Elizabeth. REUTERS/Rogan Ward

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: Dale Steyn of South Africa shows Brad Haddin of Australia that he bowled him out during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: Brad Haddin of Australia is bowled out by Dale Steyn of South Africa during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: South African players celebrate with JP Duminy (R) after he got the wicket of David Warner of Australia during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

South Africa's players appeal successfully for LBW against Australia's batsman David Warner, right, on the fourth day of their 2nd cricket Test match at St George's Park in Port Elizabeth. Photo by: Themba Hadebe/AP

Australia's batsman David Warner, left, plays a side shot as South Africa's wicketkeeper AB de Villiers, right, watches on the fourth day of their 2nd cricket Test match at St George's Park in Port Elizabeth. Photo by: Themba Hadebe/AP

Australia's batsman Chris Rogers, plays a shot on the fourth day of their 2nd cricket Test match against South Africa at St George's Park in Port Elizabeth. Photo by: Themba Hadebe/AP

South Africa's Dale Steyn celebrates the wicket of Australia's Steve Smith (L) during the fourth day of the second cricket test match in Port Elizabeth. REUTERS/Rogan Ward

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: Chris Rogers of Australia bats during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

South Africa celebrates taking the wicket of Australia's Nathan Lyon (R) and winning the second Test cricket match against Australia in Port Elizabeth. REUTERS/Rogan Ward

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: South African players celebrate with Vernon Philander after he got the wicket of Shaun Marsh of Australia during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 21: Vernon Philander of South Africa appeals during day 2 of the 2nd Test match between South Africa and Australia at AXXESS St Georges on February 21, 2014 in Port Elizabeth, South Africa. (Photo by Duif du Toit/Gallo Images)

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: Dale Steyn of South Africa celebrates the wicket of Ryan Harris during day 4 of the 2nd Test match between South Africa and Australia at AXXESS St Georges on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Duif du Toit/Gallo Images)

PORT ELIZABETH, SOUTH AFRICA - FEBRUARY 23: Graeme Smith and Dale Steyn of South Africa celebrate after winning the game during day four of the Second Test match between South Africa and Australia at AXXESS St George's Cricket Stadium on February 23, 2014 in Port Elizabeth, South Africa. (Photo by Morne de Klerk/Getty Images)

JP Duminy attempts fielding his own bowling on the fourth day of their 2nd cricket Test match at St George's Park in Port Elizabeth. Photo:Themba Hadebe/AP

JP Duminy plays a shot during the fourth day of the second cricket test match against Australia in Port Elizabeth. REUTERS/Rogan Ward

Hashim Amla celebrates scoring a century during the fourth day of the second cricket test match against Australia in Port Elizabeth. Reuters/Rogan Ward