Ryan Doherty/John Hyden, United States (22) defeated Kacper Kujawiak/Mariusz Prudel, Poland (27) 2-0 (21-14, 21-15).
It was the first FIVB World Tour meeting between the two teams.
In Pool C, both the United States and Poland are now 1-1. Also in Pool C, Phil Dalhausser/Nick Lucena of United States is 2-0 and Guatemala's Luis Garcia/Andy Leonardo is 0-2.
Up next for Doherty/Hyden is Guatemala while Poland will play Dalhausser/Lucena. Both matches are Wednesday, 2 August.