A bad manouver by Cullen on Race 2 forced Giovanni Venturini to retire and David Fumanelli to make an unscheduled stop.
After seventeen laps of racing Jack Harvey took the chequered flag and his second GP3 win of the season.
Conor Daly: "It's a shame that the championship fight might have been compromised by someone else's stupidity yesterday."
Dino Zamaperelli first hit his teammate Tio Ellinas, and then hit Conor Daly.
ART Grand Prix’s Jack Harvey wins thrilling race in Italy
Daniil Kvyat puts himself into the GP3 title chase in Italy.
MW Arden duo of Daniil Kvyat and Robert Visoiu lock-out the front row
MW Arden duo of Daniil Kvyat and Carlos Sainz lead the way in Italy