New Zealand had already sealed the series win, but lost their closing one-day international against Sri Lanka with a 34-run defeat.
Kumar Sangakkara hit an unbeaten 113 as Sri Lanka claimed a consolation victory in their one-day international series in New Zealand on Thursday.
The Black Caps had already made sure of the win in the seven-match contest by going 4-2 in front in Dunedin on Sunday, but closed the series with a 34-run defeat in Wellington.
Sangakkara - ably assisted by Tillakaratne Dilshan (81) - put Sri Lanka on a sound footing by helping the tourists to 287-6 before New Zealand's batting attack was skittled with more than four overs to spare.
The dead-rubber nature of Thursday's encounter saw both sides make a host of changes, with Sri Lanka fielding three players not selected in their World Cup squad.
Stand-in captain Lahiru Thirimanne (30) was lucky to remain at the crease when he appeared to edge behind on four, but went on to play his part in a 71-run opening stand.
Dilshan arrived at the crease after Thirimane was trapped lbw and joined Sangakkara in building on Sri Lanka's early promise - the duo racking up a partnership of 104.
However, Dilshan was caught behind off Tim Southee in the 33rd over and Sri Lanka's supporting cast were unable to live up to the standards set by their opening trio.
Thisara Perera's 20 was as close as anyone came to matching Thirimanne, Dilshan or Sangakkara, as Corey Anderson (3-59) led the New Zealand bowling attack.
New Zealand's response got off to a nightmare start as Martin Guptill (0) took one in the pads off the first ball, and fellow opener Tom Latham (6) did not fare much better - bowled by Shaminda Eranga (2-34) in the fourth over.
Captain Kane Williamson steadied the ship with a reassuring 54, but saw his partnerships with Latham, Ross Taylor (11) and Grant Elliott (24) fall by the wayside cheaply.
Having made three catches during the Sri Lankan innings, Luke Ronchi added a creditable contribution with the bat, hitting 47 off 42 balls during an hour at the crease.
However, New Zealand were unable to put together any big-scoring partnerships and slumped short of their target.