Brady House blasted a home run in the opening inning for the Americans at the Estadio Kenny Serracín in David and the US never looked back.

Their pitcher Cale Lansville managed three strikeouts with both sides now moving to a record of three victories and one defeat.

Chinese Taipei, 6-3 winners over Germany today, top the group with four wins and a loss and have completed their opening stage fixtures.

They are already assured of a place in the super round with the best three placed sides qualifying.

Panama and the US, however, are yet to finish their group matches as their games yesterday were postponed due to poor weather.

They will try again tomorrow on the scheduled rest day - with the US 4-0 up on Brazil and Panama yet to start against China.

Brazil, who have a record of two wins and two defeats after edging China 2-1 today, could still qualify but it looks likely that the Americans and the hosts will advance.

Group B concluded today with back-to-back defending champions Cuba, Japan and Dominican Republic occupying the all-important top three places.

The Cubans finished with a 100 per cent record after beating Australia 9-3 at the Estadio Rico Cedeño in Chitré.

Japan ended by thumping South Africa 20-0 to finish second on four wins and a defeat.

Dominican Republic won a critical clash with The Netherlands 11-2, in what was essentially a shoot-out for third place in the group.

Both sides began the match with a record of two wins and two defeats.

The super round, where countries play the qualifiers from the other group, will begin on Thursday (August 16) alongside the consolation round.

It will follow the re-staging of the weather-affected games tomorrow.