San Lorenzo moved back into second place in the Argentinian Primera Division after a 1-4 win at Huracan on Tuesday.
After several disappointing results, San Lorenzo momentarily seemed to be heading for another as Goltz put Huracan ahead after ten minutes.
But Torres equalised five minutes after the break and Chavez made it 1-2 in the 66th minute. Two goals from Silvera eventually handed the away side a comfortable win.
With two games to go, Boca have a two-point advantage over San Lorenzo.
In those games, Boca face Gimnasia y Esgrima La Plata and Colon de Santa Fe, while San Lorenzo Independiente and Argentinos Juniors.
