Carlos Sainz Jr was again the man to beat on day two of GP3 Series pre-season testing at Estoril in Portugal.

After posting the fastest time on Wednesday, the Red Bull protege continued his strong form in the new second generation GP3 car with another unbeatable lap of 1m27.654s in the closing stages of the afternoon session.

The MW Arden driver’s time was actually slower than his benchmark from the first day, but he did finish up nearly three tenths of a second clear of Giovanni Venturini of Trident Racing and Marussia Manor Racing’s Tio Ellinas.

Conor Daly was fourth for ART Grand Prix ahead of Sainz’s teammate Daniil Kvyat, Koiranen GP’s Kevin Korjus and Jenzer Motorsport man Alex Fontana. David Fumanelli (Trident), Jack Harvey and Facu Regalia (both ART Grand Prix) rounded out the top ten.

Fumanelli had earlier topped the slower morning session, which began on a wet track, ahead of Jenzer drivers Patric Niederhauser and Fontana. Lewis Williamson was fourth for newcomers Bamboo Engineering before handing over his car to Ryan Cullen for the afternoon. Another change midway during the day was Melville McKee replacing Adderly Fong at Status Grand Prix.

The Estoril test concludes with a third day of running on Friday.