SHANGHAI, China -- The Chinese Grand Prix looks like a clear one-stopper but there are still some unknowns going into the race. For the first time since the paddock assembled on Thursday, sunshine is forecast all day on Sunday and track temperatures will be much higher than they were in qualifying. That should help Mercedes, which struggled to get its tyres up to temperature over one lap, but also means the extent to which the tyres degrade is something of unknown.
