Kane Williamson ponders make-up of New Zealand attack

Kane Williamson conceded he was yet to finalise his XI for Friday's opening Test between New Zealand and South Africa as he monitors the state of the Durban wicket.

The Black Caps, fresh from two heavy wins over Zimbabwe over the past three weeks, take on a Proteas side who have not played in the five-day format since a 2-1 defeat to England in January.

On the eve of the two-match series, Williamson was still unsure as to the make-up of his bowling attack, with a decision to be made over whether two spinners would be required to back up the pace of Trent Boult, Tim Southee and Neil Wagner.

"We're going to have a look at the wicket‚ just to see if it dries out a little bit more‚ before we finalise our XI‚" he said in a media conference.

"The choice is the extra spinner or an extra seamer.

"The wicket looks a bit tacky but the game goes for five days and there are a number of things to consider.

"No Test matches have been played here at this time of the year so both teams go in a little bit blind‚ but it looks like a pretty good surface.

"Here we know it will be different [to the wickets in Zimbabwe]. Perhaps there might be more seam movement‚ which requires different tactics.

"If there is movement putting the ball in a good area for a long period of time is important to get the rewards. If there isn't [movement] we'll need to adjust."