By Robbie Blakeley, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL - On a night filled with tension and late drama, Flamengo were knocked out at the group stage of the 2012 Copa Libertadores in a failure that could make for a swift end to coach Joel Santana's fifth spell at the club.
The Rubro-Negro comprehensively defeated Argentine club Lanús 3-0, with goals from Wellinton, Luiz Antonio and Deivid, but previous slip-ups in the tournament have cost the Gave . . .