The NBA is staging another successful preseason tour in Europe. Regular-season games on the continent are the next step.

"I think that time is coming closer," NBA commissioner David Stern said Sunday at halftime of the Toronto Raptors win over Virtus Lottomatica Roma. "That has historically been a matter of euros. It costs many euros to buy a game from a regular season because our teams do so well.

"But with the new O2 Arena in London, with the new arena in Berlin, with the proposed arena in Rome, Europe is beginning to develop buildings that look much like the ones that we have in the United States, and those buildings will yield more revenue for such a game."