Daniele Lupo / Paolo Nicolai, Italy (11) defeated Abubakarr Kamara / Lombie Patrick, Sierra Leone (38) 2-0 (21-7, 21-8).
It was the first FIVB World Tour meeting between the two teams.
In Pool K, Italy is 1-0 and Sierra Leone is 0-1.
Up next for Italy is Christopher McHugh / Damien Schumann of Australia, while Sierra Leone will play Russia's Oleg Stoyanovskiy / Artem Yarzutkin. Both matches are Monday, 31 July.