René Rast and Enzo Ide, driving the #2 Belgian Audi Club Team WRT Audi, took top spot, just holding off the Series newcomers Dominik Baumann and Thomas Jäger.
The Dutch seaside resort hosts the third round of the 2014 season, after some spectacular action during the opening two rounds at Nogaro and Brands Hatch.
Filip Salaquarda: "Track conditions were very difficult under the rain and I did not have any chance to keep the car under control in the aquaplaning."
Audi will be sitting pretty on the grid for the BSS event at Zandvoort.
Dominant Pro-Am victory for GRT Grasser Racing Team in their Lamborghini LP 560-4. Cesar Campanico had a heavy impact in his Audi causing a red flag; photographer injured.
The Blancpain Sprint Series is extremely competitive this year.
Salaquarda will share the wheel with another young and fast driver: Alessandro Balzan.
Friday notebook from Zandvoort...
Sébastien Loeb Racing once again showed itself as one of the teams to beat in the third round of the FIA GT Series.
July 6/7 date set for third round of FIA GT Series.
The young Belgian ace took a victory and a second place in the third weekend of the 2013 FIA GT Series and is now strongly leading in the FIA GT Series championship standings.
Belgian squad took heavy points thanks to good pace and perfect races by its drivers and pit crews
Seyffarth Racing finished 8th in the qualifying race before finishing 4th in the main race.
A contact with Ricardo Zonta (BMW Z4) put an early end to Filip Salaquada race.