Copa Libertadores – Round of 16 (First Leg)

24 April 2013
Newells Old Boys – Velez Sarsfield

Referee: Diego Abal (ARG, photo)
Assistant Referee 1: Hernan Maidana (ARG)
Assistant Referee 2: Ernesto Uziga (ARG)
Fourth Official: Mauro Vigliano (ARG)
Referee Observer: Carlos Coradina (ARG)

25 April 2013
Real Garcilaso – Nacional
Referee: Marcelo Henrique (BRA)
Assistant Referee 1: Marcio Santiago (BRA)
Assistant Referee 2: Kleber Lucio (BRA)
Fourth Official: Diego Haro (PER)
Referee Observer: Manuel Yupanqui (PER)