Wellington: Concerns Friday over injuries to Tim Southee and Rangana Herath disrupted preparations for New Zealand and Sri Lanka on the eve of the second Test in Basin Reserve, Wellington.
Both camps have given their key bowlers until just before the Test starts on Saturday to prove their fitness.
Sri Lanka have signalled they now have a plan to combat the dominance of the hosts' captain Brendon McCullum, who set up the Black Caps' eight-wicket win in the first Test in Christchurch when he blasted 195 in the first innings.
Wellington's Basin Reserve is a favourite ground for McCullum where last year he led New Zealand to victory over the West Indies by an innings and 73 runs, and scored 302 in a match-saving knock to draw a Test against India.
Left-arm leg spinner Herath is central to Sri Lanka's strategy, having removed McCullum in three of the four innings when they last met in a two-Test series just over two years ago.
He finished that series with 21 wickets at 13.90 and was sorely missed by Sri Lanka when he did not play in the Christchurch Test because of a hamstring injury that continues to be troublesome.
Doug Bracewell will share the new ball with Trent Boult should Southee be ruled out, but otherwise New Zealand are likely to field an unchanged lineup even though Kane Williamson is nursing a sore shoulder.
The first Test win completed a golden year for New Zealand in which they won five Tests for the first time, and McCullum wants to continue the momentum to push them up the world rankings with fifth spot beckoning.
Despite moving up only one place to seventh in their stellar year just gone, the Black Caps have closed the gap on India and Sri Lanka immediately ahead of them.
Sri Lanka, meanwhile, considered shoring up their batting with the possible inclusion of Dinesh Chandimal in the middle order in place of Niroshan Dickwella, as Mathews said they would leave nothing to chance to square the series.
Teams from:
New Zealand: Tom Latham, Hamish Rutherford, Kane Williamson, Ross Taylor, Brendon McCullum (Capt.), James Neesham, BJ Watling (wk), Mark Craig, Neil Wagner, Doug Bracewell, Trent Boult, Tim Southee, Dean Brownlie
Sri Lanka: Dimuth Karunaratne, Kaushal Silva, Kumar Sangakkara, Lahiru Thirimanne, Angelo Mathews (Capt.), Dinesh Chandimal, Prasanna Jayawardene (wk), T Kaushal, Dhammika Prasad, Shaminda Eranga, Suranga Lakmal, Rangana Herath, Nuwan Pradeep, Niroshan Dickwella, Dilruwan Perera, Dushmantha Chameera
Pitch & conditions:
Another green wicket promising plenty of bounce, the toss will be crucial with New Zealand and Sri Lanka both looking to bowl first. The weather forecast is good for the first three days, but worsens towards the end of the Test.
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January 3-7, 2015
Start time 1100 local (2200 GMT prev day)