South Africa captain Faf du Plessis will hope to finally win a toss that could be more crucial than most when his side host England in the third Test in Port Elizabeth.
The wicket is expected to take spin and reverse swing late in the game, which will make chasing even a modest target tricky with the teams locked at 1-1 after two games.
South Africa have lost five tosses in a row and 11 of the previous 16. Although they batted for 137 overs in the second innings of their 189-run second test loss at Newlands they will want to leave England facing the deteriorating wicket in Port Elizabeth.
Du Plessis feels their battling display as the shadows lengthened at Newlands will give his team confidence.
"Sometimes you will still lose by improving and that was the case for me," said Du Plessis.
"As a batting unit, we can take confidence from seeing guys like Pieter Malan and the way he played.
"There were some real good signs from a batting point of view."
England will probably stick with specialist spinner Dom Bess after his fine display of control in Cape Town, but must find a replacement for James Anderson.
Jofra Archer, who missed the second Test at Newlands with an elbow injury, will be in contention, but Mark Wood could also be recalled for the first time since February.
"If you look at the data, spin tends to play a bit more of a part here than the other grounds," England assistant coach Paul Collingwood said.
"But we'll gauge it. These pitches change so quickly over 24 hours. We'll have a good look on Wednesday and see which combination is best to take 20 wickets."
St George's Park is a result ground, with 25 of the previous 30 Tests at the venue having produced a winner.
England have a good record with only one defeat in nine previous visits, back in 1957. They have won five of those games. (Reporting by Nick Said, editing by Ed Osmond)
Australian Associated Press