Moscow FR3.5: Sauber F1 protege Sergey Sirotkin takes first win

Russian teenager Sirotkin led the field away at the second attempt, after the first start was aborted when all three of the championship leaders - Sainz, Rowland and Pierre Gasly - were left stranded on the grid.

With front row starter Gasly out of the picture, Sirotkin spent the entire race in a duel with Zoel Amberg, and the gap fluctuated between the two from start to finish.

Amberg got within half a second of the leader in the closing stages, having maintained the gap below a second once he recovered from Sirotkin's blistering opening two laps that enabled him to initially open up a lead of 1.8s.

But after the Swiss driver made a mistake five laps from the end he was never quite able to get back on terms with Sirotkin, who did not put a wheel wrong out front.

Behind the lead pair, Pietro Fantin took a lonely third place, while Roberto Merhi came home fourth after fending off a fierce attack from Jazeman Jaafar in the early stages.

Things got worse for the title contenders after they were wheeled into the pits following their problems on the grid.

While Sainz and Rowland started from the pitlane and quickly caught the rest of the field, Gasly was delayed further and rejoined the race one lap down.

Sainz and Rowland then came to blows at the end of the seventh lap, when the Briton made a move to the inside at the final corner and the cars made side-to-side contact.

While Rowland was out on the spot, Sainz rejoined, and showed pace similar to that of the leaders as he made up ground in clear air.

Results - 29 laps:

Pos  Driver               Team       Time/Gap
 1.  Sergey Sirotkin      Fortec   40m17.408s
 2.  Zoel Amberg          AVF         +0.829s
 3.  Pietro Fantin        Draco       +5.749s
 4.  Roberto Merhi        Zeta        +8.099s
 5.  Jazeman Jaafar       ISR        +11.993s
 6.  Will Stevens         Strakka    +22.267s
 7.  Marlon Stockinger    Lotus      +25.074s
 8.  Matias Laine         Strakka    +25.552s
 9.  Richie Stanaway      Lotus      +27.339s
10.  Oscar Tunjo          Pons       +31.303s
11.  Will Buller          Arden      +35.015s
12.  Roman Mavlanov       Zeta       +45.748s
13.  Beitske Visser       AVF        +52.322s
14.  Carlos Sainz Jr      DAMS       +52.753s
15.  Marco Sorensen       Tech 1     +53.216s
16.  Luca Ghiotto         Draco      +54.137s
17.  Norman Nato          DAMS     +1m11.925s
18.  Pierre Gasly         Arden        +1 lap
19.  Meindert van Buuren  Pons       +13 laps

Retirements:

     Oliver Rowland       Fortec       6 laps