Australia's Richie Porte all but sealed the Tour Down Under title after finishing as runner-up in the last two years, when he clinched the fifth stage to Willunga with a brazen attack about a kilometer from the summit finish. The 31-year-old BMC leader finished the 151.5 kilometer stage from McLaren Vale to the summit of Willunga Hill 20 seconds ahead of compatriot Nathan Haas with Colombian climber Esteban Chavas in third. More...