Kimi Raikkonen says he hit traffic on his quickest FP2 lap in Bahrain after finishing nearly 1.5s behind Mercedes driver Nico Rosberg.
Ferrari's threat failed to emerge on Friday, with Raikkonen only finishing fifth and team-mate Sebastian Vettel making a mistake on his first super-soft lap. However, it was clear both Ferrari drivers could have been closer with clean laps.
Explaining what delayed his first attempt, Raikkonen said: "The super soft felt OK, but I had some traffic when they were new, I caught the same Williams twice. Apart from that they felt pretty OK.
"If you have a softer tyre they are normally a lot faster at least over one lap. The tyres are the same as last year, so it didn't suddenly change."
The Finn thinks there is little point focusing on individual lap times during a practice session and says Ferrari's day went to plan.
"We do our own stuff but you guys are always looking at the lap times and you can choose [to think] whatever you want. We ran as we had planned and now we have to go through everything and see how was it. It worked pretty OK, we did plenty of laps and it wasn't too bad. The lap times are one thing but we'll see how it goes tomorrow."
Though it looks like Mercedes is in a strong position Raikkonen is only focusing on Saturday at this stage.
"We always try to do the best we can but where we're going to end up on Sunday I don't know. Hopefully we'll have a good, solid day tomorrow and then go from there."