Spaniard Fernando Alonso, who spectacularly fell out with 23-year-old Lewis Hamilton last year and left the British team, told Spanish radio Cadena SER as he returned home to Switzerland that the new championship leader's Monaco breakthrough does not indicate he is now the favourite.
"It is too early to say how the championship is going to end," Alonso, a former double title winner, said.
"We have seen the lead change a few times now, but even the fourth place, Kubica, is only a stone's throw away.
"I see the favourites still as the two Ferraris, by a long way. Do I think Hamilton can do it? No," the 26-year-old, who won the Monaco grand prix for McLaren in 2007 but not the championship, concluded.
Even Felipe Massa, who like his own teammate Kimi Raikkonen and Hamilton has won two races so far in 2008, does not dismiss the chance that BMW-Sauber's Kubica could win.
"Why not?" the Brazilian told the Swiss newspaper Blick.
"I think three or four drivers have the opportunity, and my former team (Sauber) is doing a great job," he added.
"It is too early to say how the championship is going to end," Alonso, a former double title winner, said.
"We have seen the lead change a few times now, but even the fourth place, Kubica, is only a stone's throw away.
"I see the favourites still as the two Ferraris, by a long way. Do I think Hamilton can do it? No," the 26-year-old, who won the Monaco grand prix for McLaren in 2007 but not the championship, concluded.
Even Felipe Massa, who like his own teammate Kimi Raikkonen and Hamilton has won two races so far in 2008, does not dismiss the chance that BMW-Sauber's Kubica could win.
"Why not?" the Brazilian told the Swiss newspaper Blick.
"I think three or four drivers have the opportunity, and my former team (Sauber) is doing a great job," he added.