Abel Alves resigned as Boca Juniors coach following a humiliating 3-0 loss to Colon, which dropped Boca - one of Argentina's most popular clubs - into 19th place in the 20-team Clausura tournament.
Boca confirmed Alves' resignation on Friday. He is the third Boca coach in less than a year to leave the club.
Alves was the reserve-team coach when he took over in January after Alfio Basile quit following a loss to River Plate. Basile took over for Carlos Ischia, who left 10 months ago after Boca was knocked out of the final 16 of the Copa Libertadores.
Boca, which has 11 points from 13 games, lost three straight matches and like bitter rival River Plate is going through one of the worst seasons in its history.
Alves was reported to have had a confrontation with goalkeeper Javier Garcia before the loss to Colon when Alves told him he would not be playing in the match.
Martin Palermo, the club's all-time scoring leader, called the club's slump "the worst" in his years with Boca. He played for Boca in 1997-2000 and rejoined in 2004 after a stint in Spain.
Roberto Pompei, who coaches Boca's youth teams, is one of the candidates to take over for Monday's match against Arsenal at Boca's La Bombonera stadium.
Boca vice president Jose Beraldi said Alves would stay with the club.
"Without a doubt he will continue with the club," Beraldi said. "His entire coaching staff, not just him."
