Williams Formula 1 reserve Jack Aitken and Ferrari driver Davide Rigon have been taken to hospital following a major multi-car accident in the Spa 24 Hours.
Northern Ireland driver Adam Carroll has been signed up for the rest of the 2011 GP2 season by Super Nova, as Luca Filippi switches to Scuderia Coloni to replace Kevin Ceccon.
Following an operation to insert 21 pins into his leg to stabilise multiple fractures to his tibia and fibula, Davide Rigon is set to return home from Istanbul to Italy at the weekend.
Colini's Davide Rigon requires immediate surgery on Monday morning after sustaining multiple fractures to his tibia and fibula in the GP2 sprint race at Turkey.
Trident Racing's Spa-Francorchamps weekend was largely overshadowed by a pit-lane incident before Saturday's feature race that left one of its chief engineers needing urgent medical attention, but the team has since been able to report encouraging news from hospital in Belgium.