A mistake from Nicolo Bulega at turn 13 allows Michael van der Mark into fourth, as Alex Lowes leads lap two.
Alex Lowes leads the first lap from Toprak Razgatlioglu, who dropped to third off the line but passed Danilo Petrucci for second at turn five.
A disastrous start for Alvaro Bautista has dropped the reigning champion from sixth on the grid to 13th.
It's lights out for Race 1 in Portimao! A good start from Alex Lowes gives him the lead.
Despite the dominance of Razgatlioglu in recent races, and his pole position here in Portimao, Danilo Petrucci topped both FP2 and FP3 this weekend, and harbours podium hopes of a podium finish, and potentially even a race win.
Toprak Razgatlioglu starts from pole position after topping Superpole for the fourth race in succession, a run stretching back to the Emilia-Romagna Round at Misano.
Good afternoon and welcome to Portimao for Race 1 of the WorldSBK Portuguese Round. We have a slightly odd schedule this weekend with both main races set to start at 18:00 local time.