Pablo Hernandez scored the only goal as Argentinos Juniors claimed a 1-0 win at Lanus.
Hernandez struck after 59 minutes to seal three points which took his side sixth, one point behind All Boys, who were held to a 1-1 home draw by Godoy Cruz.
After a goalless first half, Mauro Matos opened the scoring for All Boys two minutes into the second period, but substitute Facundo Castillon levelled in the 72nd minute.
