In their first match of the tournament Japan took an early lead against Canada through a home run from Eri Yamada, while another single in the first innings put them 2-0 in front.

Four more runs in the second took Japan's lead to 6-0 before a further three across the third and fourth gave them an unassailable lead.

Canada managed to score a single in their fifth innings but the match ended prematurely as Japan went on to record a comfortable 9-1 win.

The reigning champions then claimed a second victory after thrashing Puerto Rico 8-1.

Following a tight opening period, Japan scored five unanswered runs in the third to go 8-1 in front with the match coming to an end following the fourth innings.

The United States, who will be hoping to go one better than their silver medal last year, did not concede a single run on their way to recording two victories today.

The Americans first beat the Philippines 4-0 before defeating Mexico 8-0 inside five innings.

As well as the senior team, the US have fielded a junior side in this competition.

They endured a mixed day though as they lost their opening match to Puerto Rico 3-1 before recovering to beat Canada 5-4.

Australia eased to a 6-0 win over Mexico in their first match of the tournament but were beaten 7-5 by the Philippines in this evening's final match.

Matches are being played at the OGE Energy and INTEGRIS Fields.

Action is due to continue tomorrow with further pool stage action.