In a match dampened by the first rain at the rollicking Horse Guards Parade venue, Brazil lost the first set on a long spike that hit the back corner of the tape, but came back to win the second. They led 14-12 in the third before hitting two spikes long to allow Austria to come back and tie it.
In other action, Marta Menegatti and Greta Cicolari of Italy beat Ekaterina Khomyakova and Evgeniya Ukolova of Russia 17-21, 21-18, 15-8.
Spain's Liliana Fernandez Steiner and Elsa Baquerizo McMillan beat Marleen van Iersel and Sanne Keizer of the Netherlands 14-21, 21-16, 15-11.
Spain's Pablo Herrera Allepuz and Adrian Gavira Collado beat Premysl Kubala and Petr Benes of the Czech Republic 25-23, 21-16.