San Lorenzo: Promoted All Boys, back in the Argentine first division for the first time in 30 years, upset title favourites Estudiantes 2-1 to leave San Lorenzo as sole leaders.
Independiente coach Daniel Garnero`s future looked bleak after his side`s 4-0 trouncing by Banfield left them bottom of the standings, still without a win after seven rounds of the Apertura championship.
Boca Juniors, whose poor start to the season included a 2-0 defeat by All Boys, beat Colon 3-1 at home with a hat-trick by veteran striker Martin Palermo, taking his tally to five in three matches and a record 227 for the club.
San Lorenzo beat another promoted side, Olimpo, 3-1 at home on Saturday to lead the standings with 15 points. They are one point ahead of Velez Sarsfield and two in front of Estudiantes, Arsenal, Banfield and River Plate, who lost 1-0 away to Newell`s Old Boys in Rosario.
Independiente, one of Argentina`s so-called `big five` clubs, crowned South American champions a record seven times and only pipped to the post in the 2009/10 Clausura championship in May, have struggled badly since letting coach America Gallego go.