Photo: Sam Bloxham/GP2 Series Media Service.
New ART recruit Sergey Sirotkin was quickest on day one of the GP2 pre-season testing at Barcelona.
The Russian, who joined?reigning teams’ champions ART?after being the top rookie of the 2015 field, dominated the morning session alongside Pierre Gasly and Alex Lynn.
The former teammates were less than a tenth behind Sirotkin with Gasly narrowly taking second for his new team Prema.
Racing Engineering duo Norman Nato and Jordan King were fourth and sixth respectively, sandwiching Mitch Evans.
Arthur Pic was seventh, ahead of top rookie Antonio Giovinazzi, Sean Gelael and Nobuharu Matsushita.
Affected by rain, the afternoon session was ran on a drying track.
With constantly improving conditions, it was ex-Ferrari junior?Raffaele Marciello setting the benchmark time, beating Nicholas Latifi by 1.6s.
2015 GP3 runner-up Luca Ghiotto was third, followed by Lynn and Gustav Malja.
King in sixth was more than three seconds behind as the top 10 was completed by Evans, Gasly and Renault junior Oliver Rowland.
The day’s running was interrupted by red flag three times, caused by Nabil Jeffri hitting the barrier, Rowland stopping on track and Malja landing his car in the gravel trap.
Day 1 times
| Pos. | Driver | Team | Morning | Afternoon |
| 1 | Sergey Sirotkin | ART Grand Prix | 1:29.072 | 1:44.905 |
| 2 | Pierre Gasly | Prema Racing | 1:29.141 | 1:45.559 |
| 3 | Alex Lynn | DAMS | 1:29.171 | 1:43.909 |
| 4 | Norman Nato | Racing Engineering | 1:29.542 | 1:48.174 |
| 5 | Mitch Evans | Jagonya Ayam Campos Racing | 1:29.655 | 1:45.274 |
| 6 | Jordan King | Racing Engineering | 1:29.686 | 1:44.888 |
| 7 | Arthur Pic | Rapax | 1:29.737 | 1:49.035 |
| 8 | Antonio Giovinazzi | Prema Racing | 1:29.771 | 1:46.455 |
| 9 | Sean Gelael | Jagonya Ayam Campos Racing | 1:29.784 | 1:48.513 |
| 10 | Nobuharu Matsushita | ART Grand Prix | 1:29.934 | 1:46.675 |
| 11 | Luca Ghiotto | Trident | 1:29.967 | 1:43.758 |
| 12 | Dan?el De Jong | MP Motorsport | 1:30.004 | 1:50.630 |
| 13 | Nicholas Latifi | DAMS | 1:30.072 | 1:43.500 |
| 14 | Artem Markelov | Russian Time | 1:30.139 | 1:48.686 |
| 15 | Raffele Marciello | Russian Time | 1:30.289 | 1:41.863 |
| 16 | Marvin Kirchhofer | Carlin | 1:30.317 | 1:45.986 |
| 17 | Gustav Malja | Rapax | 1:30.396 | 1:44.176 |
| 18 | William Buller | Carlin | 1:30.752 | 1:46.257 |
| 19 | Oliver Rowland | MP Motorsport | 1:31.274 | 1:45.889 |
| 20 | Philo Paz Armand | Trident | 1:31.583 | 1:47.345 |
| 21 | Jimmy Eriksson | Arden International | 1:32.195 | 1:46.043 |
| 22 | Nabil Jeffri | Arden International | 1:32.773 | 1:47.692 |