Velez Sarsfield have been crowned Argentinian Clausura champions after establishing an unassailable four-point lead in the penultimate round of the season on Sunday.
A 2-0 defeat of Huracan, combined with a 1-0 defeat for Lanus at Argentinos Juniors later in the evening, gave Velez their eighth league title.
Uruguayan striker Santiago Silva headed Velez into the lead six minutes after the interval, in a match played behind closed doors because of a ban on spectators at Huracan's Duco stadium after crowd trouble three weeks ago.
Substitute David Ramirez converted a late penalty, while team-mate Sebastian Dominguez and Huracan defender Facundo Quiroga were sent off in the 75th minute for fighting.
Argentinos scored their winner in the 57th minute when Gustavo Oberman's lob came back off the post to German Basualdo who squared the ball for striker Nicolas Blandi to fire home.
Meanwhile, the round was highlighted by the emotional home farewell for retiring Boca Juniors goalscoring legend Martin Palermo.
However, Boca could not manage a victory to mark their 37-year-old record marksman's home farewell, being held 1-1 by Banfield.
Palermo did not add to his Clausura tally of six goals as Nicolas Colazo put Boca ahead less than two minutes into the second half, before Banfield put a damper on the festivities equalising with a Facundo Ferreyra header six minutes from time.
"I experienced so many things at this ground. I never imagined the fans would show me so much affection ... I'm enjoying this moment which is unique," a tearful Palermo said.