Fluminense, Velez Sarsfield, Independiente and Once Caldas simply have to win to reignite their chances of reaching the last 16, which is where Caracas, San Martin and Godoy Cruz hope to land this week.
Source: Big guns feeling the heat (http://www.fifa.com/worldfootball/clubfootball/news/newsid=1403401.html?cid=rssfeed&att=)