Valtteri had a tougher race, and was disappointed to finish just fifth. The Finn started cleanly and looked odds on to claim the final spot on the podium until the late Safety Car intervened.
Switching onto the Softs and struggling to get heat into the harder compound on the restart, Valtteri was swamped by the UltraSoft-shod Raikkonen and Red Bull's Daniel Ricciardo.
"Today's race and result were a big disappointment," said Valtteri. "It's been an all-around difficult weekend for me. It would have been nice to at least be on the podium and score good points for us as a team.
"After the Safety Car restart I was on the Soft tyres, but the guys who overtook me were on the UltraSofts. I was on the back foot, struggled with grip and could not fight them. In the race the Softs were working well for us, but during a Safety Car restart there's always a risk that other guys might have softer compounds. In a normal race we would have had an optimal tyre strategy.
"This has been the most difficult weekend for me, so I need to learn a lot from it because I wasn't quick enough. I need to analyse my mistakes quickly, and then hopefully come back stronger next week in Monza."