Action at the six-team tournament in Japan reached the penultimate batch of round robin matches in Nagoya's Nippon Gaishi Hall today.

Zhang Changning scored 16 points to help the Rio 2016 gold medallists defeat Russia 25-20, 25-18, 25-20.

The Asian powerhouse is now unbeaten in its last seven matches at the World Grand Champions Cup, a record run for the team in the competition.

"I’m happy with the win today," said Chinese coach An Jiajie.

"Russia are a very strong team, so we prepared well for this match.

"In this competition, we play a different kind of team every day, so depending on the opposition we see different faults within our own game."

Victory put the Chinese team on 11 points for the tournament and when the United States could only claim a 3-2 win over hosts Japan later on, the title was sealed as their lead at the top of the standings was unbeatable.

The Americans claimed a 22-25, 25-21, 26-28, 25-21, 15-12 win to take their record to three wins and one defeat for the tournament.

However a five set win only gave them two points, which means the maximum they can now finish on overall is 10.

In today's third match, Brazil put an end to their losing streak with a straight sets win over South Korea.

The Brazilians recovered from their two five-set losses to China and Japan, respectively, to win 25-15, 25-10, 25-23 with Tandara Caixeta scoring 19 points.

They have never lost three matches in a row at the World Grand Champions Cup while South Korea remain without a victory at this tournament.