Hamilton stronger than Rosberg this year says Massa

Felipe Massa says he would put his money firmly on Lewis Hamilton winning back-to-back titles, as he believes Nico Rosberg is now on the back foot.

"Last year it was difficult to be sure (who would win)," the Brazilian told UOL Esporte, "but this year Hamilton is stronger in every way than Rosberg.

"We have seen a few squabbles but mostly on the psychological side," Massa added, "which shows that Rosberg is suffering more than Hamilton. "F1 is 100 per cent about the detail."