All-rounder Jacob Oram is in doubt for the remainder of the Chappell-Hadlee Trophy series after sustaining a freakish knee injury in the first ODI.

Oram sent down seven overs, taking the key wicket of Shane Watson, before he twisted his left knee in the 28th over while fielding a single off Michael Hussey.

"His knee is painful, it's still unclear what it is...there will be further investigation in Auckland tomorrow and we'll assess after that," Dave Currie, New Zealand's manager, said. "It's pretty painful at the moment so we'll have to wait and see."

Currie said no replacement had yet been made but fast bowler