Korea Sunday quotes: Sauber

Sergio Perez - 16th: "Initially my start was pretty good, but then I got stuck behind some other cars and the positions I gained were lost again. In the beginning with the soft tyres it was quite good, but then with the supersoft tyres I struggled. During the last stint especially they degraded way too much. I had to pit and change them three laps before the end because the front right tyre had a hole in it, and you could see the casing. It was a shame, but there was no way I could have finished the race with those tyres. However, we didn't have the pace today to finish in the points."

Giampaolo Dall'Ara, Head of Track Engineering: "In qualifying we were already struggling with the pace, and today it was not any better. We had hoped we would be able to fix some of the problems we had in practice with the grip, but we couldn't really improve the situation. For sure we had some incidents, but our main problem really was a lack of performance, as we were just slower than the competition. We tried to find a way through with our strategy, the drivers did a good job, but in the end we were not good enough. Now we have to react quickly."