Boca Juniors went to the top of the Apertura with a 2-1 win over a Union Santa Fe side which finished with nine men.
Boca's third win in four league games this season was secured by goals from
Schiavi put visitor Boca ahead after 19 minutes with a powerful header from eight yards, before Union had
Despite its reduced numbers, Union drew level in the 61st minute when
Union lost a second man in the 71st minute when
Union has lost four from four so far.
Unbeaten Arsenal Sarandi stands second in the table after a 2-0 win at Independiente.
An own goal also put Argentinos Juniors on the way to a 2-1 win over
Diego Ftacla scored a late equaliser for Tigre which drew 2-2 away to All Boys, ensuring both teams remain winless after four games.
Ftacla had the final say in stoppage-time, drilling a powerful low shot inside the right post from 12 yards.
Lanus missed the opportunity to go top of the Clausura table as it was held to a goalless draw at Tigre.