Mortara 's move meant he overtook Kunimoto under braking for the lead at the start of the seventh lap .
Mortara clung onto the slipstream of Kunimoto and then steered left onto the outside line .
Mortara 's move meant Mortara overtook Kunimoto under braking for the lead at the start of the seventh lap .
Mortara clung onto the slipstream of Kunimoto and then steered left onto the outside line .