Boca held at home
Boca Juniors missed the chance to extend their lead at the top of the Apertura standings as they were held to a goalless draw at home to Belgrano Cordoba on Sunday.
Boca had been expected to take three points from the clash despite Belgrano's current sixth-placed position but the visitors proved more than a match for the Buenos Aires giants.
Third-placed Atletico Rafaela saw the form book thrown out as they went down 3-0 against Estudiantes in La Plata. Gaston Fernandez scored in the 23rd and 73rd minutes, either side of strike partner Mauro Boselli's contribution in the 61st.
Lanus lost 2-1 at home to Velez Sarsfield as Fernando Ortiz smashed a winner three minutes from time.
Argentinos Juniors drew 0-0 at home to Colon in a match which saw both sides reduced to 10 men in the 12th minute.