LONDON, England - Nico Rosberg may not have lost the plot, as some suggested in the wake of his outburst against Mercedes team mate Lewis Hamilton at the 2015 Chinese GP but he is feeling the heat.
Rosberg's accusation that the world champion had been selfishly slow as he cruised to a pole-to-flag victory in Shanghai spoke more of mounting frustration than any real grievance.
Hamilton has won eight of the last ten races and Rosberg, the 2014 runner-up in a title battle that went down to the wire, has been unable to assert himself in qualifying either in 2015.