The last game was one-sided, and i think in this match we will get nice entertainment. And yes South Africa is leading this series by 2-1. New Zealand must win this match to alive in this series. I think SA will win this game. They are in very much confident, and the batsman is in good form. NZ have home pitch support but don't know how they will use this advantage. My choice is SA.
South Africa is a very strong team and with all the best batsmen in the world is stacked in the team it is really difficult for New Zealand to win even though they are playing in their home grounds. Even with their top bowlers not in the team South Africa is bowling really well .
New Zealand requires another 187 runs to win this match and still eight wickets and 33.0 overs remaining in this match. SA has scored 279 runs in 50 overs for eight wickets. So far NZ has done an excellent job in chasing 280 runs. They should keep wickets and build slowly partnerships for another 10 overs then later on they can go for big shots and can win this match easily but main thing is they shouldn't lose many wickets.
New Zealand won this match pretty easily, scoring the runs in 45 overs. Martin Guptill scored 180 out of those 280 runs. That pretty much tells the story.

Although South Africa are favourites in this series, the scoreline now reads 2-2.
Now the series looks interesting both teams won 2 games each, and the 5th game will be deciding the match. Superbly played by New Zealand team. They bowled well and restricted SA for a decent score. And Fantastic batting from Martin Guptill scored 180 runs not out if SA made 300+ runs target I am sure he will score a double century, bad luck anyway congrats NZ and Guptill.
South Africa is still best in this tournament, they lost the match, but I have hope that they will win this series by 3-2. New Zeland played well today Guptill batted well, and yes he missed his double century. The home crowd enjoyed Guptill batting. Becasue of this win the 5th ODI become more interesting, let's see who will win the cup? Home? Or away?