The 2013 Copa Libertadores semi-finals begin tonight, having been on hiatus during the Confederations Cup. Argentina’s remaining representatives, Newell’s Old Boys, take on Ronaldinho’s Atlético Mineiro tomorrow night in Rosario, but tonight sees Colombian championship finalists Independiente Santa Fe travel to Asunción to play Paraguayan giants Olimpia. That game kicks off in about two-and-a-half hours, which gives you time to read my preview of the semi-finals for ESPNFC. Enjoy.