Sri Lanka 88 for 4 (Mathews 27*, Southee 3-29) trail New Zealand 178 (Southee 68, Lakmal 5-54, Kumara 3-49) by 90 runs
Christchurch: Suranga Lakmal and Tim Southee vied for early honours as 14 wickets fell on day one of the deciding second Test between New Zealand and Sri Lanka in Christchurch on Wednesday.
Lakmal produced a career-best five for 54 as New Zealand crumbled to be all out for 178 in 50 overs on the green wicket at Hagley Oval.
Southee, the number eight batsman who top scored for New Zealand with 68, then removed three of the Sri Lankan top order as the tourists reached stumps at 88 for four.
Angelo Mathews was not out 27 with Roshen Silva on 15 while Southee had three for 29.
In a marathon opening session, Lakmal bowled unchanged for 16 overs as he tore New Zealand apart with figures at one stage of four for 11.
He returned late in the innings to remove Neil Wagner to eclipse his previous best of five for 63 against South Africa two years ago.
Southee and BJ Watling (46) offered spirited resistance for New Zealand with a 108-run stand for the seventh wicket while Ross Taylor (27) was the only other home batsman to score more than 10.
After the drawn first Test in Wellington, New Zealand need to win in Christchurch to secure a fourth consecutive series win for the first time.