"You have to believe the bad run will end," Bianchi said after Saturday's defeat.
Boca has only nine points in 11 matches.
In other matches on Saturday it was: San Lorenzo 1, Godoy Cruz 1; Colon 1, Arsenal 0; San Martin 3, Union 0.
The round ends with two matches Monday — Belgrano vs. All Boys and Lanus vs. Atletico Rafaela — and one match on Wednesday — Velez vs. Tigre.
Five people, believed to be members of a Quilmes supporters' gang, were injured in a shootout prior to Quilmes' match at River Plate. The incident took place in the southern part of Buenos Aires province as fans prepared to travel to the match in central Buenos Aires, the state-run Telam news agency reported. All five were hospitalized, one in critical condition.
Violence is endemic in Argentine football. The nonprofit group "Let's Save Football" says more than 270 people have died in football-related violence in the South American country since records have been kept starting in 1922.