Sri Lanka claimed a dramatic Super Over win in the opening match of their three-game Twenty20 series against New Zealand on Sunday to earn their first victory on tour.

The match went to a tie-break decider after both teams chalked up 196 runs in a high-scoring thriller at Auckland's Eden Park.

New Zealand only made 8-2 off a tight Super Over bowled by spinner Maheesh Theekshana before Charith Asalanka smashed a six off the second ball of Sri Lanka's response, then sealed victory with a four.

It handed the tourists their first win of a month-long tour of New Zealand after losing the Test and one-day international series by the same 2-0 scoreline.

Black Caps tailender Ish Sodhi had earlier set up the Super Over finish when he tied the scores by calmly hoisting the last ball of their 50 overs for six off Sri Lanka captain Dasun Shanaka.

It completed a run chase that always looked unlikely for the home side but came alive when Rachin Ravindra scored 26 off 13 balls to follow key knocks from Daryl Mitchell (66 off 44) and Mark Chapman (33 off 23).

It left New Zealand needing 13 to win off the final over, a task that became harder to achieve when Adam Milne fell to the first delivery bowled by Shanaka.

Theekshana was a key performer with the ball, conceding 1-22 off four miserly overs, while fellow spinner Wanindu Hasaranga took 2-30 as the hosts struggled for enough momentum through the early overs.

Left-hander Asalanka top-scored in Sri Lanka's 196-5, striking six sixes in a rapid 67 off 41 balls.

He put on 103 for the fourth wicket with Kusal Perera, who returned from a long-term shoulder injury in style.

The experienced Perera scored a controlled 53 not out off 45 balls in what was his first match for Sri Lanka in any format since the 2021 T20 World Cup, having spent nearly 18 months out.

Kusal Mendis started the run-fest by blasting 25 off just nine deliveries, having lost opening partner Pathum Nissanka to the first ball of the match bowled by Milne.

New Zealand struggled for timing in the Super Over, losing the wickets of Jimmy Neesham and Mark Chapman, who struck a lone boundary.

The sides meet in the next T20 match in Dunedin on Wednesday before the series concludes in Queenstown next Saturday.

New Zealand v Sri Lanka first T20 scores

Brief scores from the first Twenty20 international between New Zealand and Sri Lanka in Auckland on Sunday:

Sri Lanka 196-5, 20 overs (C. Asalanka 67, K. Perera 53 not out, K. Mendis 25; J. Neesham 2-30)

New Zealand 196-8, 20 overs (D. Mitchell 66, M. Chapman 33, T. Latham 27; D. Shanaka 2-20, W. Hasaranga 2-30)

Super Over:

New Zealand 8-2

Sri Lanka 11-0 off three balls

Toss: New Zealand

Result: Sri Lanka won by two wickets in Super Over

Series: Sri Lanka lead 1-0