Valtteri Bottas finished in fourth, pushing his teammate hard in the final laps
After good starts for both Williams cars they ran third and fourth until Rosberg quicker pitstop allowed him to jump ahead of both cars after the one and only round of stops.
Both drivers capitalised on Rosberg stopping on track in the late stages of the race to claim a valuable 27 points for the team.
Rob Smedley, Head of Performance Engineering: It was a good race for the team. The mandate from the start of the weekend was that we had to have a clean weekend. If there were 15 points on the table, we had to come away with 15 points. The great news is that we've taken 27 points and a podium. We've moved away from the people behind us in fourth by a good amount, which was the absolute priority. We've kept pace with Ferrari, so in championship terms it's been a good weekend for us. We came out of what was not a particularly good race in Belgium, from both a performance and operational point of view, and we've reacted really well. They team were absolutely spot on all weekend which is a great show of the strength and depth we have at Williams now.
Felipe Massa: It's really emotional to have been on the podium. It was a difficult but fantastic race, I didn't have the best start but I was still able to pass cars so it was good enough. I worked hard to open the gap to Valtteri, but when I pitted early it gave him the advantage on tyres at the end of the race. It was hard to keep him behind as he really wanted it, but I just about managed it. I am delighted for myself and the team, we got a lot of valuable points. It's special to be up on the podium at Monza again, and I really thank the team for their effort today.
Valtteri Bottas: It was a good result for the team today, good points which is important. My pitstop lost me too much time which was crucial for the second part of the race. I managed to get extremely close in the end but it was too late. As I saved my tyres and brakes I was able to attack in the final laps but we had system issues on the last lap, so we need to investigate what happened because I also lost an opportunity there. It's a shame for me that I couldn't be on the podium but it's still good points for us.
Williams Martini Racing