The best one-day classic rider in the world surged a hundred meters from the finish line to outsprint Norway's Thor Hushovd and Australian Robbie McEwen for his third Tour de France stage victory.

The Paris-Roubaix and Tour of Flanders winner confirmed without the shadow of a doubt he would be the man to beat in mass sprint finishes on this Tour.

The 24-year-old Belgian, winner of two stages last year, has made it his goal to win the Tour's points classification green jersey this year.

He took the jersey away from six-times Tour champion Lance Armstrong, who had worn it all day after taking second place in Saturday's 19 kms time trial.

"For me, the Tour started today and I really wanted to win a stage because, after next Sunday, there will not be that many chances for sprinters to win stages and the man in the green jersey might take it to Paris," Boonen said.

Armstrong finished in the main bunch with overall leader David Zabriskie, who retained his yellow jersey and enjoyed a rather relaxed day.

"My (CSC) team mates kept me near the front but it was very nervous near the end," Zabriskie said.

FOUR-MAN BREAKAWAY

McEwen, winner of the green jersey in 2004, was the first into action 400 meters from the line but the Australian could not resist Boonen's charge and was also narrowly beaten by Hushovd on the line.

In the absence of Germany's Erik Zabel and Italian Alessandro Petacchi, the sprinters hierarchy on this Tour was uncertain and this first sprint finish made it clear who was the strongest.

The stage was animated by and early breakaway by four riders, who stayed in front for more than 150 kms before being caught six kilometers from the finish.

Two of the breakaway group had good reason to try their luck. Hungar