It was a test in which McCullum equalled the world record of 100 test sixes, held by Australian Adam Gilchrist. Having belted two sixes in six balls in the second innings, when asked why he didn't stick around another over to have a crack at No 101, McCullum was a touch sheepish.
''I said 400 (was the target) to the boys so it would have looked pretty selfish if I'd stayed out there for one more crack at it.
''But look, we play on smaller grounds than the Australians."
McCullum quipped it's ''the only record I actually care about. It's the only record Kane (Williamson) or Ross (Taylor) aren't going to break, so I should be able to hold onto that one."
And yes, he was keenly aware he had 98 sixes before the second innings began - ''as you can probably tell by the way I've batted all through my career".
The win was McCullum's 10th as captain, leaving him one behind Geoff Howarth but still 17 behind the leader, Stephen Fleming.
Both teams have plenty to ponder before the second test.
New Zealand may drop a seamer, either Doug Bracewell or Neil Wagner, to add offspinner Mark Craig to the mix; Sri Lanka have late arrival Kaushal Silva bolster the batting; and uncapped legspinner Jeffrey Vandersay might be in the plans depending on the reading of the Seddon Park pitch.
- By David Leggat in Dunedin