Estudiantes returned to the top of the Torneo with a 2-0 win over Racing Club.
The teams went in goalless at half-time but Enzo Perez broke the deadlock a minute into the second half and Gabriel Mercado followed up with another nine minutes later.
Three points take them to the summit on goal difference after Velez Sarsfield managed only a scoreless draw away to San Lorenzo.
Godoy Cruz were 4-1 winners at Lanus.
David Ramirez, Ariel Rojas, Jairo Castillo and Diego Villar scored for Godoy, with Mario Reguiro's penalty the consolation.
Elsewhere, Huracan drew 2-2 with Banfield, Rolando Zarate notching twice for the hosts to level Marcelo Carrusca and Emilio Zelaya efforts.