HTC-Columbia's Andre Greipel took his second stage victory at this year's Eneco Tour as teammate Tony Martin moved one step closer to overall victory in the UCI ProTour stage race.

Like the rest of his teammates, Greipel worked hard all day to help Martin defend his race lead on the hilly stage in the Ardennes but still had the speed to win the sprint in Heers.

He was well placed in the final kilometre despite some late attacks and then burst past Edvald Boasson Hagen to win by more than a bike length. Belgium's Jurgen Roelandts also went past Boasson Hagen to finish second.

It was the the 52nd victory for the HTC-Columbia team in 2010.

"This is a very special victory for me," Greipel said proudly. "It was a hard stage and not really suited to the sprinters. I was seriously struggling to stay in the peloton after working to help Toy Martin hold the lead. With 10km to go to the finish, I went back to the team car and they told me to save myself for the sprint. I was really hurting but fortunately I had a little bit left and it was enough to win."

Tony Martin picked up some precious bonus seconds during the stage to extend his overall lead to 11 seconds on Koos Moerenhout before Tuesday's final 16.9km time trial stage around Genk.