The first New Zealand-Sri Lanka cricket Test may turn into a battle of attrition and pressure on a typical Dunedin wicket which won't break up, says strike bowler Trent Boult.
Sri Lanka will resume on 197-4 on Saturday morning in reply to New Zealand's first innings total of 431.
Dinesh Chandimal is unbeaten on 83 and Kithuruwan Vithanage on 10.
The tourists are 234 runs behind but their run rate suggest they need more than a day to reach parity.
Boult, after play on day two, agreed it was now a battle of attrition on a pitch that wasn't doing much.
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"But on the flip side things happen quickly, if you can sustain that pressure and keep it on the opposition then eventually something cracks," he said.
"If we can continue and literally just give them nothing then hopefully things will happen for us."
The University Oval pitch doesn't typically break up later in the match. However, the ball could start reverse swinging, Boult said.
New Zealand have picked four seamers for the match.
