Deciding the grid for the Malaysian Grand Prix is what this hour's worth of action in Sepang is all about. The smart money is on Mercedes to dominate, although they have expressed concerns about tyre wear which could manifest into serious problems in the race. Ferrari have shown some performance improvements, whilst the Williams pair continue to impress - and have some ground to make up after missing out in Australia. Whether Lotus will manage to get out of the garage at all remains to be seen.