Piotr Kantor / Bartosz Losiak, Poland (7) defeated Roger Battilana / Gregorio Godoy, Paraguay (42) 2-0 (21-16, 21-12).
It was the first FIVB World Tour meeting between the two teams.
In Pool G, Poland is 1-0 and Paraguay is 0-1. Also in Pool G, Taylor Crabb / Jake Gibb of the United States is 1-0 and Argentina's Julian Azaad / Nicolas Capogrosso is 0-1.
Up next for Poland is Argentina while Paraguay plays the United States. Both matches are on Monday, 31 July.