Cricket: Blackcaps look to new captain Tim Southee for calm on 'deteriorating' Karachi wicket

The Blackcaps are confident of getting a result on a "deteriorating" Karachi wicket and will draw on new captain Tim Southee's wealth of experience in hopes of doing so.

New Zealand overtook Pakistan's first-innings score and lead by two runs with four wickets remaining at stumps on day three.

Opener Tom Latham (113) brought up his 13th test century, with former skipper Kane Williamson recording another ton, finishing unbeaten on 105 runs.

The Karachi pitch has offered little assistance to the bowlers thus far, but with the wicket beginning to deteriorate, NZ are determined to bat for as long as possible.

While Williamson will be integral to setting up a test match victory with the bat, their bowling and fielding will be required to finish off the job, with Southee poised to play a pivotal role.

Latham hasn't seen much difference between Southee and Williamson's leadership but believes the former's calm will shine through on an evolving wicket.

"It is a wicket that is deteriorating now, obviously spin is coming into play a lot more than it has the first couple of days, apart from maybe that first morning," he said.

"We're always looking at ways that we can win games of cricket, and from our point of view, I'm sure we just want to try and get as many as we can and obviously put Pakistan under pressure if possible.

"The more we get, and the longer we bat, the more the wicket is going to deteriorate, so fingers crossed that we can do that tomorrow.

"To be honest, it hasn't been a massive shift, I think what we have been doing - we've been reasonably successful over a period of time playing our brand of cricket.

"I think [as] the leader Tim, he has got an immense amount of experience, he's been playing a long time for New Zealand.

"I think the situations he's been in, he's going to bring such a calm nature to his leadership and captaincy.

"I'm sure over time, once he's done it for a few games, I'm sure he will put his own spin on things in terms of how he wants to operate and how he wants the group to operate.

"For us, it's always been about trying to play our brand of cricket and I'm sure Tim will keep pushing us in that same direction."