According to the schedule following Thursday's draw, little-known Italian lightweight Carmine Tommasone will become the first fully professional boxer to step into the ring at an Olympic Games.
Facing the 32-year-old, who secured his slot last month in a special qualifying tournament reserved for professionals, in the fourth bout of the opening day's action will be Mexican Lindolfo Delgado.
Tommasone is one of three professionals who have qualified from outside the AIBA team and individual competitions that allow boxers to retain their amateur status while fighting for prize money.
The others are Cameroon's former WBO interim middleweight champion Hassan N'Dam N'jikam and Thailand's 36-year-old former IBF flyweight champion Amnat Ruenroeng, who was beaten by Delgado in the qualifying final.
Light-heavyweight N'Dam N'Jikam will also fight on Saturday when he clashes with Brazilian Michel Borges, while Ruenroeng must wait until Sunday evening for his opening bout against Argentina's Ignacio Perrin.
The men will be fighting without headguards for the first time since the 1980 Moscow Olympics and the first to do so will be Britain's light-flyweight Galal Yafai and Cameroon's Semplice Fotsala in the opening bout.
Meanwhile, Moroccan light-heavyweight Hassan Saada was arrested on Friday on charges he sexually assaulted two maids who worked in the Olympic Village.
