Karun Chandhok offered a worrying outlook for Lewis Hamilton at this weekend's Australian Grand Prix.
Mercedes are struggling for competitiveness again this year and may have only the fourth quickest car on the grid. Red Bull are the runaway leaders already while Aston Martin have made great strides and Ferrari also seem to be a little ahead.
Hamilton has found it particularly difficult to get to grips with the W14. In contrast, his team-mate George Russell was impressive last time out in the Saudi Arabian Grand Prix and finished fourth in the race after finding a setup for his car which worked well.