New Zealand's Kane Williamson plays a shot during the tri-series ODI cricket match between New Zealand and South Africa, in Lahore, Pakistan . (AP )

LAHORE, Pakistan, Feb 10, (AP): Kane Williamson trumped South African opener Matthew Breetzke’s record-breaking debut ODI hundred and led New Zealand to the tri-nation series final with a six-wicket win on Monday.

Williamson followed his Saturday’s half-century against Pakistan with an unbeaten 133 off 113 balls -- his first ODI century since the 2019 World Cup - and cruised New Zealand to 308-4 for its second successive win.

The tournament is served as a build-up for the Champions Trophy later this month and Williamson has tuned up perfectly for the mega event with two meaningful knocks.

Breetzke had earlier become the first cricketer to score 150 in his maiden ODI appearance and guided an understrength South Africa to 304-6 after New Zealand captain Mitchell Santner won his second successive toss and elected to field.

Williamson and Devon Conway set up the run-chase with a solid second-wicket partnership of 187 runs against a weakened South African pace bowling attack. Fast bowlers Marco Jansen and Kagiso Rabada are among seven players scheduled to join the South Africa team for the Champions Trophy over the weekend after the tri-nation series final on Friday.

Williamson used his feet well against inexperienced bowlers and even experienced wrist-spinner Tabraiz Shamsi also couldn’t separate the pair on a flat wicket.

Williamson completed his second-fastest century in ODIs off 72 balls with a single, but Conway missed out on his hundred when he fell for 97 while attempting the landmark with a square cut.

Conway made it to the playing XI after Rachin Ravindra got a blow on his forehand in the field during New Zealand’s thumping 78-run win in the first match at the newly renovated Gaddafi Stadium on Saturday.

The left-hander fully capitalized on a missed stumping chance when he was on 36 and hit nine fours and a six before he was brilliantly caught at point by Senuran Muthusamy - one of the four debutants for South Africa.