Lewis Hamilton admitted that his retirement from the Italian Grand Prix at the weekend may ultimately cost him the title.
The 2008 F1 champion took full responsibility for colliding with Felipe Massa’s Ferrari on the first lap of the race, damaging his car’s suspension.
Hamilton slid into the gravel trap at the following Lesmo corner and has now lost the championship lead to Mark Webber after the Australian finished sixth.
Hamilton said: "It was clearly a mistake by myself, one of those things that happens when you're racing and you're pushing hard.
"It's not over, but it's days like this, and mistakes like I made today, that lose you world championships. I only have myself to blame."
Despite the error, McLaren team principal Martin Whitmarsh urged Hamilton not to change his approach to racing, saying: "[Hamilton] is an aggressive racing driver who, when viewing the slow-motion replay from the comfort of an armchair, probably wishes he had not done it, and so do we.