It was a difficult race for Valtteri after he was hit by Sebastian Vettel at the first corner, which punctured his left-rear tyre and prompted an early stop.
He lined up for the restart in P18, last place, but put in a strong recovery drive with a damaged car to claim P7.
"I was on the outside into Turn 1, braked quite late and left some room for him on the inside," he explained.
"I knew keeping that line would give me the inside for Turn 2, but then suddenly I was hit from behind. It's definitely a shame, we had a strong car as Lewis showed.
"After the hit from Sebastian, the car was quite damaged. Everything was lost in Turn 1 with that damage and the puncture.
"There was quite a lot of damage to the floor, which made it very difficult to come back through. But, at least we managed to get some points."