The United States won in straight sets over Venezuela Tuesday, improving to 7-1 at the men's volleyball World Cup in Japan.

Led by Thomas Hoff's 12 points, the Americans dominated the Venezuelans (28-26, 25-16, 25-23) in Fukuoko. Venezuela fell to 2-6.

Twelve teams are competing in the round-robin competition, which ends Sunday. The top three teams earn berths at next year's Athens Olympics.

In other action, both Brazil and Serbia and Montenegro remain unbeaten. Brazil topped winless Egypt in straight sets (25-20, 25-20, 25-13). Serbia and Montenegro, champions at the 2002 Sidney Olympics, beat Tunisia (25-16, 25-14, 25-21). Tunisia has only one victory in eight matches.

Also Tuesday, officials announced Egyptian player Mohamed Moselhy has tested positive for a banned substance and will be suspended for the remainder of the tournament.

But the International Volleyball Federation said the results of the matches that Moselhy played in to date would still stand.