By the way, Wikipedia (sort of reliable information) states that Serbia is already qualified to the final 6. Is it true? In this case Serbia could just play with the bench players and help Japan even more.
Serbia is the only team which has qualified to the final 6. FIVB has just published it some hours before: "
Serbia became the first team to secure their spot among the best six of the FIVB Volleyball Women’s World Championship in Japan. On Monday, the Balkan squad continued their impeccable winning streak as they have not lost a single set in the seven matches they have played since the start of the tournament."
So, if Terzic wants, he could play with the bench players the next matches. More than "helping" Japan, he could make the starters get a break. Most of all Boskovic and Brakica.