I think Brazil will win today against Dominican as Brazil should be the 1st and then play with the 2nd in the other pool. It's easier than playing with the host.
If I were a Brazil coach, I would rest the starters and let the bench lose to DOM. After that, I would buy some beer and sit and enjoy the Italian performance. I have no doubt that Italy, in this case, would aim for the second place in their group and therefore let their bench lose to Russia in three sets. This will give some rest for the main squad, provide plenty of entertainment and give an arguably easier opponent in the semis. Russia doesn't look very healthy while U.S. may cause some trouble.