Big guns take aim at Columbia

Willunga Hiil is destined to be the scene of the biggest ProTour face-off this nation has ever witnessed whenthe main artillary go head-to-head in an effort to destroy overall leader Andre "Gorilla" Greipel today.  The affable German is in the box seat to clain another ProTour crown after cruising to his third Santos Tour Down Under stage victory of 2010 at Goolwa yesterday.