Vitaly Petrov made a little bit of history by becoming the first driver to top a GP2 Series session under floodlights as he swept to the fastest time in 'evening' practice at Losail, Qatar.
With rounds seven and eight of the GP2 Asia Series to be held at night for the first time, Petrov assumed the lead towards the latter stages of the session as he and his rivals adjusted to driving under lights.
With little chance to acclimatise before qualifying kicks off later, the early pace was dictated, somewhat surprisingly, by David Price Racing's Michael Herck, the Romanian, who has spent much of his GP2 career towards the back of the field, making the most of the fact no other driver has experienced the Losail circuit previously.
However, his joy was eventually scuppered by Campos' Petrov, as well as Marco Bonanomi, in his second race for QI-Meritus, and Durango's Davide Valsecchi, who moved ahead of Herck in second and third.
Giedo van der Garde rounded out the top five for iSport, ahead of Bahrain sprint race winner Sergio Perez. Yelmer Buurman gave burgeoning team Ocean Racing Technology a reason to be happy in seventh, ahead of ART pair Sakon Yamamoto and Nico Hulkenberg. Diego Nunes completed the top ten.
The session wasn't so positive for Bahrain pace setters DAMS, with championship leader Kamui Kobayashi down in 15th, 1.7secs off the pace, while Jerome d'Ambrosio was even further back in 19th.
Elsewhere, Asia Series debutants Davide Rigon and Alvaro Parente, driving for Meritus and Trident respectively, were 18th and 14th quickest.