Michal Bryl/Grzegorz Fijalek, Poland (15) defeated Marco Cairus/Mauricio Vieyto, Uruguay (39) 2-0 (27-25, 21-11).
It was the first FIVB World Tour meeting between the two teams.
In Pool J, Poland is 2-0, advancing to the knockout phase, Uruguay is 0-2. Also in Pool J, Alexander Brouwer/Robert Meeuwsen of the Netherlands is 1-0 and Italy's Adrian Carambula/Alex Ranghieri is 0-1.
Up next for Poland is The Netherlands while Uruguay plays Italy. Both matches are Tuesday, 1 August.