BUENOS AIRES, Nov 19 (Reuters) - Boca Juniors won 2-1 at Gimnasia-Jujuy to move closer to the title on another troubled weekend for the Argentine championship, which has been plagued by violence and intimidation off the field.
Boca stayed four points clear of Diego Simeone's Estudiantes, who scored twice in stoppage-time to come from behind for a 2-1 win at Newell's Old Boys, their ninth successive victory.
But the weekend's action on the pitch was overshadowed when the fans of Racing Club and San Lorenzo blocked their respective team buses and forced the match to be called off.
The fans, who jumped up and down in celebration on hearing that the match had been postponed, were angry at a decision to order the Buenos Aires derby to be played behind closed doors in La Plata, 60 kilometres away.
There were rumours that the rest of Sunday's games would be called off as well but they went ahead after Argentina Football Association (AFA) president Julio Grondona warned that teams who did not turn up would have points docked.
It was the latest twist in the tournament in which two other games were postponed at short notice and three suspended during the course of the match because of crowd violence.
All the weekend's games were played without away fans, who have been banned for the rest of the year by the AFA in a bid to clamp down on violence.
A booming free kick by central defender Daniel Diaz in the 64th minute gave Boca the points on their long trip north to Jujuy.
Neri Cardozo had finished off a sweeping move to give Boca the lead against the run of play in the 26th minute but Gimnasia-Jujuy replied through Gabriel Ramon in first-half stoppage-time.
Boca have 41 points from 16 games with three to play.
The real drama was at Newell's, where Estudiantes took full advantage of referee Hector Baldassi's decision to add on six minutes of stoppage-time.
Paraguay striker Oscar Cardozo gave Newell's the lead on the half hour.
Estudiantes, showing the fighting spirit which was the hallmark of coach Simeone in the days when he captained Argentina, levelled through 35-year-old striker Jose Luis Calderon in the first minute of stoppage-time.
Three minutes later, 17-year-old forward Pablo Piatti scored the winner for Estudiantes.