A change of ball played a crucial role as New Zealand wrapped up the Sri Lanka innings within the first hour on day four before going into lunch with a 227-run lead with eight second innings wickets in hand in the second test in Colombo.
Maybe all they needed was a bit of luck to end their form slump and it came when the new ball had to be changed for the fifth time in the match after losing its shape yet again on day four.
With a new swinging ball in hand Tim Southee completed his third career five-wicket bag and Trent Boult picked up three wickets in the session as New Zealand needed just eight overs to wrap up the Sri Lankan innings and hold a 168-run lead. At lunch the Kiwis were 59-2 with first innings century-makers Kane Williamson (11) and Ross Taylor (1) at the crease.
The 168-run innings lead is the second-biggest lead by a New Zealand side in Sri Lanka and puts them in a great position to end a five-test losing streak. New Zealand are also out to end an even bigger drought in Sri Lanka where they haven't beaten the hosts since 1998.