Amidst fears over traffic and the huge speed differentials at Jeddah, drivers have been warned not to attempt to create gaps at one of the most dangerous parts of the track.
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11th and 9th in the opening sessions, Christian Horner admits that Red Bull "desperately" needs Sergio Perez to up his pace and be in the battle at the front.
While as impressed with the Jeddah track as his rivals, Lewis Hamilton admits concern at potential danger zones due to traffic.
It's a very fast circuit, lots of fast corners which means it will not be easy to overtake without a big speed differential.
It will be interesting to see how easy overtaking is on Sunday and how this will play into people's view on strategy.
Some of our rivals look very quick and we'll have to be at our very best to understand what we've learnt in practice.
There are of course a lot of things to work on and improve so we'll see what we can do to get more pace out of the car overnight.
The long run pace seemed competitive, Lewis was a little happier than Valtteri, and we finished the day with quite different setups on the cars.
The first read on the tyres confirms the reasonably small performance gap between the soft and the medium tyre, which will definitely have an effect on qualifying strategy.