Sergio Perez says he is leaving Singapore on a high after fending off both charging Toro Rosso cars late on to hold on to seventh place and create breathing space for Force India in the F1 constructors championship.

After an underwhelming qualifying performance the Mexican bolted from 13th on the grid into the top ten and says while he benefitted from the first safety car period his joy was cut short in the second as Max Verstappen and Carlos Sainz Jr hounded him in the sprint to the chequered flag.

"It's a good feeling to end such a demanding race with seventh place and six points," Perez said. "The start was very important because I knew I had to get ahead of Fernando Alonso and I also jumped ahead of Romain Grosjean.

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"After that I managed to keep up a good rhythm and I had new tyres immediately after the first safety car so I concentrated on looking after them and building a gap to the cars behind. The second safety car didn't help us because it gave the Toro Rossos a big advantage with their fresh tyres.

"We knew they were catching us quickly and it was tough to stay ahead because my tyres were getting old and it wasn't easy to keep the car away from the walls. So the last 15 laps of the race were very demanding but fortunately we could hold on for seventh."

Perez's six points for Force India coupled with a pointless Singapore Grand Prix for Lotus saw the Silverstone-based team move 19 points clear in the fight for the all-important fifth place in the F1 teams' championship.

On a personal level Perez also jumped ahead of Grosjean and into ninth in the drivers' standings thanks to his third solid points finish in the B-spec VJM08.