Nico Rosberg took the GP2 championship lead while Northern Irishman Adam Carroll snatched a point and pole for Sunday's second race in Belgium. Championship leader Heikki Kovalainen spun out on the last lap to let in Carroll, who then forced his way past Mathias Lauda to steal eighth place.
That gave him pole for Sunday's sprint race, which features a reverse grid.
Nelson Piquet Jr won the race ahead of Ernesto Viso and Rosberg took third to move to the top of the standings.