There was an obvious fear hanging over the last of the quarterfinal first-leg ties in South America's Copa Libertadores. Colo Colo of Chile had home advantage. But they looked outgunned against Palmeiras of Brazil, who had won all of their previous away games in the competition. The Chileans would almost certainly make a cautious start, trying to make sure they did not concede an away goal, and hoping their impish playmaker Jorge Valdivia could come up with a piece of magic to break the deadlock. Palmeiras...