New Zealand and Australia will have to continue to observe the NBA from afar.

Interest in the American basketball league has increased dramatically over recent years with both countries producing top-end talent in the league.

When the NBA announced they'd hold their annual "Basketball Without Borders" camp in Australia next June, many thought a game down under would soon follow.

NBA commissioner Adam Silver has told the Radio Sport Breakfast they know interest is growing in New Zealand and Australia, but can't commit to a game being held in either country yet.

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He says when they travel for international games they have to condense their schedule and trips to the other side of the world would be too hard to pull off.