Boca finished with 10 men for the expulsion of Fabra, at 15 of the second half. Mouth also reached Argentinos and Lanus at the top, with 25 points. Velez, meanwhile, was 22.
Before the start of the match, Mauro Zarate was harassed by Velez fans. The forward left the club to go to Boca.
Zarate had a clear goal chance, but Velez's goalkeeper prevented him from celebrating.
Zarate was replaced by Hurtado at 25 of the second half and the striker had a strange reaction.
The last big chance of the match was for Velez, but Esteban Andrada "gave" the point to Boca.
On the next date, Boca is a local Union, Sunday 24. Velez, meanwhile, will be a visitor to Banfield, at 19.40.