Summer Ross / Brooke Sweat, United States (5) defeated Lena Plesiutschnig / Cornelia Rimser, Austria (44) 2-0 (21-15, 21-14).
It was the first FIVB World Tour meeting between the two teams.
In Pool E, United States is 1-0 while Austria is 0-1. Also in Pool E, Tatyana Mashkova / Bakhtygul Samalikova of Kazakhstan is 1-0 and Ukraine's Valentyna Davidova / Ievgeniia Shchypkova is 0-1.
Up next for United States is Kazakhstan while Austria plays Ukraine on Sunday, 30 July.