Not since 2010 have South Africa won all five matches in a bilateral short format series, and not since 2005 in a one-day rubber. Both times the victims of those hidings have been West Indies, who are also the only team South Africa have beaten 5-0 in a Test series - in South Africa in 1998-1999. Incredibly, the mighty Australians are in danger of becoming the other entry on this index of ignominy.That will happen should South Africa win the fifth and final one-day international at Newlands today.But does it really matter much to a team who won the series last Wednesday?Captain Faf du Plessis said yesterday: "It's important and definitely what we as a team are trying to do."Four-nil is already unbelievable, and if that was the end of the series I'd be very happy. But 5-0 has never been done against Australia."And that's a South African team stripped of the injured AB de Villiers, in which Hashim Amla has missed half the series, and with Dale Steyn and Kagiso Rabada off the boil.What, beyond Quinton de Kock, Du Plessis and David Miller scoring centuries in the first three games and Kyle Abbott taking four wickets in the fourth, has made South Africa so much better than their opponents? Du Plessis' leadership, perhaps?"No, it's not my captaincy," he said. "It's just a general belief in the squad."The guys are extremely hungry to perform..."The theory that the Proteas are dominant because the Aussies brought inexperienced bowlers on tour cut no ice with Du Plessis."Their batting is just as strong, and possibly on paper sometimes even stronger, but they haven't matched our batsmen in this series at all," he said."The style of cricket we have played in this series has been on a new level and hopefully that's something we can drive forward going into this test series."But isn't he comparing apples and pears? "I appreciate that it's a different format but if you play against Australia, every mental thing you can have on your side does play a role."Former fast bowler Heath Streak will replace Makhaya Ntini as coach of Zimbabwe. - TMG Digital..