England's Kevin Pietersen said he had invented a new shot after smashing two left-handed sweeps against New Zealand.

His unbeaten 110 ensured a 114-run win at the Riverside and included two sixes where he switched his hands over to hit the ball with a left-handed grip.

"Reverse sweeps have been part of the game for however long, I am just fortunate that I can hit it a bit further," Pietersen said.

"Everybody wants brand new ideas, new inventions and that's a new shot."

England one-day captain Paul Collingwood, who was standing at the non-striker's end as Scott Styris bowled, admitted: "I covered my eyes as soon as he turned his body around.

"He did actually come up the wicket and said 'I was thinking about doing that in bed last night'."

And Pietersen added: "We were in a position where I needed to push the accelerator and it worked. Nobody has seen it before.

"On other occasions it might not work but the most important thing is a convincing England victory.

"I play to win, I would do anything to win and the most important thing is we are 1-0 up.

"The key to it is to try to raise the bar on Wednesday again, hit our straps on Saturday and if we have a good week we will have won a series."

Asked whether he thought his switch-hits should be outlawed as he is effectively a right-handed batsman playing left-handed, he responded: "I don't agree at all.

"To be honest, if you're playing right-handed you shouldn't even have the ability to hit left-handers for six like I do, so no, it's not a problem."