Alison Cerutti/Bruno Oscar Schmidt, Brazil (5) defeated Martins Plavins/Haralds Regza, Latvia (29) 2-0 (21-19, 21-19).
It was the first FIVB World Tour meeting between the two teams.
In Pool E, Brazil is 2-0, advancing to the knockout phase, and Latvia is 0-2. Also in Pool E, Chile's Esteban Grimalt/Marco Grimalt is 2-0 and Aldevino Nguvo/Justino Tovela of Mozambique is 0-2.
Up next for Brazil is Chile while Latvia plays Mozambique. Both matches are Wednesday, 2 August.