"That is one of the reasons I've slid down the order." He also said he wants to give the middle order machinations a decent chance to work; so read that as him not being back at the top of the order in the near future.
"I think we've got to let this trial, the shifting of our experience into the middle order, play out a little bit longer."
McCullum has batted in every position in the ODI order since his debut 11 years ago, bar Nos 10 and 11. He has opened 80 times, been at No 7 41 times, No 8 21 and No 3 16, with a sprinkling of outings elsewhere.
While it might seem vaguely criminal to leave the team's most rapid scorer so low in the order, there is some sense to it. Grant Elliott did well at No 4 in two ODIs in South Africa last month but he's more an accumulator than a smash-and-grab artist, which McCullum, the world's No 1-ranked T20 batsman, is.
McCullum felt Elliott, who made a run-a-ball 22, should stay up the order.
"Grant did a fantastic job for us in South Africa at No 4, and we wanted to utilise him as a batsman, rather than shuffle him down to No 6."
Otago opener Hamish Rutherford, who made an encouraging start in the T20s, joins the squad for the second match of the ANZ international series in Napier.
After flaying 24 in 10 balls on one leg to secure the win, Martin Guptill saw a specialist yesterday to have his strained hamstring assessed. The results are due out today.
NZ v England
*2nd ODI, tomorrow
*Napier, 2pm start