Marcus Ericsson said his ninth place finish at the Italian Grand Prix was 'bittersweet', as he was overtaken at the final corner by Daniel Ricciardo.
Ericsson started the race from 12th position but worked his way forward at the start and briefly challenged Nico Hulkenberg for eighth place.
Ericsson was promoted to the position when Nico Rosberg suffered an engine failure but was passed at the end by Red Bull rival Ricciardo.
"I was pleased with my start and first lap," said Ericsson, who has now secured three successive top 10 finishes.
"We were expecting to fight against our direct competitors at Monza. Throughout the race I had a good pace, therefore, I was able to pressure Nico for the whole race distance. Surely it was one of the strongest races so far this year.
"Obviously it is frustrating having lost a position in the very last corner on the last lap.
"I pushed my tyres a bit too much trying to overtake Nico, so then I was not able to defend against Daniel. A bitter sweet ending to a strong race."