The Associated Press is reporting that Pistons forward Ben Wallace and Clippers forward Elton Brand will round out the United States team in the World Championships this summer.

The choice of two power forwards reflected the concern of the American team that it needed some size to match up with some of the better teams in the tournament.

The selections were made Thursday by the USA Basketball Selection committee but have not yet been announced publicly. Two executives with knowledge of the committee's choices, speaking on condition of anonymity, confirmed the selections of Wallace and Brand.

The players who have already decided to play for the United States in the tournament, which is to be held Aug. 29-Sept. 8 in Indianapolis, are Jason Kidd, Ray Allen, Reggie Miller, Michael Finley, Shawn Marion, Antonio Davis, Jermaine O'Neal, Paul Pierce, Raef LaFrentz and Andre Miller.

The selection committee also was expected to select a player to fill an open spot on the roster as an alternate. Duke point guard Jay Williams, expected to be one of the top picks in the upcoming NBA draft, has already been named an alternate.

George Karl of the Milwaukee Bucks will coach the U.S. team.