Regular skipper Kane Williamson and paceman Trent Boult will be returning home for a pre-planned rest following the current Test series, which Sri Lanka are currently leading 1-0.
Southee, who scored 14 off 19 balls after coming out to bat at No. 10 achieved the feat by hitting off-spinner Dhanajaya de Silva for a huge six during New Zealand’s first innings.
Southee feels that the group is still trying to come to terms with the loss, however, they are proud of the way they fared in the showpiece event.
Chasing a modest target, Brendon McCullum decided to rub more salt into the Englishmen's wounds.
Sabbir Rahman's gallant maiden ODI century saved Bangladesh from total humilation after they lost three wickets with just two runs on the board chasing New Zealand's imposing target of 331.
The new ball pair then took four wickets between them on a benign pitch as the West Indies plummeted to 215 for eight at stumps.
Southee featured in a 61-run stand for the 10th wicket with Trent Boult and later removed Kieran Powell without scoring in his first over.