Stefano Coletti and his Racing Engineering team mate Raffaele Marciello have both been handed 20-second post-race penalties for incidents that took place during Saturday afternoon's feature race.

Coletti was penalised for a collision with Carlin's Julian Leal at turn 12 in the opening laps of the race. The stewards reviewed the collision and determined that Leal had the right of line and that the Monegasque driver didn't leave enough room which had resulted in the collision between them which ended Leal's race prematurely.

Coletti had managed to survive the incident with only a puncture and light damage to the Racing Engineering car. His enforced early pit stop before the safety car actually helped him come back into contention later in the race and he was able to finish in second place behind race winner Arthur Pic.

As a result of the drive-thru, Coletti loses his podium place and drops to 18th place in the revised results. The penalty promotes Rapax's Adrian Quaife-Hobbs to second place and hands ART's Takuya Izawa his first podium finish in the GP2 Series.

Marciello meanwhile was found to have passed ART's Stoffel Vandoorne behind the safety car just before the restart, the two cars not having passed the first safety car line before Marciello made his move.

Marciello went on to finish in eighth place in the race and was therefore due to pick up the pole position for Sunday morning's sprint race, but instead he will now start down in 19th place.

"When I entered the pits, I had Vandoorne next to me, who all of the sudden slowed down in front of the Safety Car line, which caused me to pass him unintentionally," explained Marciello. "This means I was handed a post-race penalty and instead of starting from pole position I will be at the back of the field."

The two penalties mean that Venezuela GP Lazarus' Nathanael Berthon is promoted two positions in the feature race result to eighth, giving him pole for the sprint. He'll line up alongside Vandoorne, with Felipe Nasr (Carlin) and Daniel Abt (Hilmer Motorsport) now on row 2.

Tom Dillmann misses out on the benefit of the reverse grid rule but will start from ninth place and as a result of being raised into the top ten now picks up the bonus points for setting the fastest lap of the race.

The revised results mean that the championship points are also revised. Jolyon Palmer is now on 180 points, 41 ahead of Felipe Nasr, while Johnny Cecotto Jr. is restored to third place after Coletti is dropped back to fourth.

In the team standings, DAMS leads with 221 points to Carlin's 205 points, while Racing Engineering narrowly holds on to third spot from Trident by three points despite no longer scoring on Saturday.

See revised GP2 feature race 1 results

Provisional Sunday sprint race starting grid

1. Nathana?l Berthon Venezuela GP Lazarus
2. Stoffel Vandoorne ART Grand Prix
3. Felipe Nasr Carlin
4. Daniel Abt Hilmer Motorsport
5. Jolyon Palmer DAMS
6. Takuya Izawa ART Grand Prix
7. Adrian Quaife-Hobbs Rapax
8. Arthur Pic Campos Racing
9. Tom Dillmann EQ8 Caterham Racing
10. Marco Sorensen MP Motorsport
11. Simon Trummer Rapax
12. Mitch Evans Russian Time
13. Conor Daly Venezuela GP Lazarus
14. Daniel De Jong MP Motorsport
15. Andr? Negrao Arden International
16. Artem Markelov Russian Time
18. Jon Lancaster Hilmer Motorsport
18. Stefano Coletti * Racing Engineering
19. Raffaele Marciello ** Racing Engineering
20. Rene Binder Arden International
21. Rio Haryanto EQ8 Caterham Racing
22. Sergio Canamasas Trident
23. Johnny Cecotto Jr. Trident
24. Kimiya Sato Campos Racing
25. St?phane Richelmi DAMS
26. Julian Leal Carlin