Mayu Ishikawa led the scoring for the Asian nation, bagging 25 points including four aces.

It turned out to be a straightforward victory for Japan following a 25-17 first-set win.

They followed this with 25-19 and 25-17 triumphs.

There were two other matches today, both of which occurred in Pool A.

Belgium bettered Cameroon 25-8, 25-19, 25-14 before Italy notched a 25-12, 25-22, 25-16, 25-21 win versus The Netherlands, who are co-hosting World Championship with Poland.

Britt Herbots starred for Belgium as she became the first player this tournament to score more than 40 points in a single match.

The conclusion of the first phase of the competition means 16 of the 24 teams have progressed to phase two, where they have been split into two pools of eight.

Italy and defending champions Serbia spearhead Pool E and Pool F, respectively, following their perfect campaigns so far.

Results from games against teams who also advanced are carried forward into the second phase.

China, Brazil, Belgium, Japan, The Netherlands, Puerto Rico and Argentina join Italy in Pool E.

Italy sit top on nine points as China, Brazil, Belgium and Japan all trail by three points.

Pool F is completed through the United States, Turkey, Thailand, Dominican Republic, Poland, Canada and Germany.

The US are the only team within three points of Serbia.

Matches are scheduled to return on Tuesday (October 4).