Lewis Hamilton has responded to the slashing of his world championship lead to one point by agreeing to make an appearance in Paris next Monday when the FIA consider an appeal against his demotion from first to third at the Belgian Grand Prix.

McLaren boss Ron Dennis today confirmed that Hamilton will turn up at the FIA's headquarters even though it will delay his acclimatisation to a different time zone in Singapore, which hosts Formula One's first night-time race on Sunday week.

Having watched Hamilton pick up only two points for seventh place at Monza in a rain-hit Italian Grand Prix won by Sebastian Vettel, Dennis said: "Of course it is not ideal so soon before a race, but we think it is important."

Title rival Felipe Massa finished sixth in his Ferrari yesterday to take his points haul to 77, one behind Hamilton, with four rounds of the title chase to run. However, should McLaren win their appeal against a 25-second time penalty imposed on Hamilton for an alleged illegal overtaking move on defending champion Kimi Raikkonen, the British driver will head to Singapore with a crucial seven-point advantage.

The championship battle has become so tense that Hamilton, who started from a career-low 15th on the grid following a mistake over tyre choice in qualifying, admitted it could be his to lose.

"I'm leading, so maybe," he said. "But Kimi is world champion, so it is his title to lose rather than mine."

Having been given inaccurate information that a rain storm was about to hit the circuit, Hamilton was left to rue a decision to stay on 'extreme' wet weather tyres during what was planned to be his one pit stop at Monza.

Had he switched to intermediate tyres the 23-year-old would have been able to mount a serious challenge to Vettel in his Toro Rosso. As it was, Hamilton had to pit again for intermediates.

"There was no chance of staying out on extremes, in the end it was damage limitation," he said. "I still had a great race. I passed eight others, including Kimi, which wasn't easy because it was very difficult out there. What happened was a bit of a shame, but I have still come away with my lead intact."

For once, though, even Hamilton's wet-weather mastery was eclipsed by Vettel, the charismatic German who at 21 years and 73 days became the youngest driver to win a Grand Prix.

Vettel had started from pole position, having won the qualifying lottery on rain-soaked Saturday, but few expected him to drive off into the distance to beat Heikki Kovalainen in the second McLaren by more than 12 seconds.

F1's new star is now destined for even greater things according to Toro Rosso team chief Gerhard Berger.

Having won the Italian Grand Prix himself 20 years ago, Berger said: "Sebastian proved he can win races. But he is going to win world championships, he is that good."

Vettel, who will replace the retiring David Coulthard at Red Bull next season, admitted he came close to tears standing at the top of the podium.

He said: "I saw the people down there, my team, my family, and they were going completely mad. Then to hear my national anthem was fantastic and I nearly started to cry. For sure, this was the best day of my life."