Some might say that Laciar exemplifies the problem many fighters in the lower weight divisions have faced throughout the years: despite their fame and success during their time as champions, they tend to be forgotten by the public after they retire, unlike boxers who won titles at the higher divisions.
Laciar began his career in his hometown, on December 3 of 1976, knocking out Carlos Maliene[?] in four rounds. After three more wins, all by knockout, he was faced with Alejandro Holguin[?], who held him to a ten round draw, becoming the first boxer to face Laciar and not come out on the losing end. After three more wins, he drew once again, this time against Jose Ibiris[?], but in his next fight, he was able to take the Córdoba State Flyweight title away from Carlos Reyes Sosa[?] in Villa Maria[?] with a 12 round decision. He finished 1977 with four more wins, including a knockout in six in a rematch with Reyes Sosa.
In 1978 he had 13 fights, for an average of slightly more than one fight per month. Among his fights that year: a rematch with Ibiris, which ended in a ten round decision win for Laciar, two fights versus contender Ramon Soria[?], which ended in a draw and in Laciar's first defeat, a 10 round decision loss, a fight with Luis Gerez[?], who drew with Laciar, and Laciar's Buenos Aires debut, a 10 round decision win over Angel Luis Fernandez[?].
1979 was another busy year for Laciar, boxing 13 times again during that year. He won 9 of those bouts. Among his fights in '79, a loss to future world Junior Bantamweight[?] champion Gustavo Ballas[?], who beat him in 10 on points, a rubber match with Ibris, resulting in another Laciar 10 round decision win, two decision losses to Raul Perez[?], and a 10 round decision win against top contender Federico Condori[?].
But early in 1980 Laciar started what would turn out to be a great decade for him. He was matched with Miguel Lanzarte[?] on February 26 of that year for the vacant Argentinian Flyweight title and won the bout by a decision in 12. After a draw in ten against Condori's brother Ruben, he won four straight bouts, and on August 30th, he challenged for the South American flyweight title. In what was his first fight outside Argentina, he and South American champion Jaime Miranda[?] battled to an 8 round no contest (a no contest is declared when circumstances beyond boxing cause the fight to be stopped) in Santiago, Chile. After one more win over Federico Condori, Miranda returned the favor by travelling to Laciar's country and this time, Laciar won the South American title with a 12 round decision win. Laciar finished the year by travelling to England, where he lost a 10 round decision to future world champion Charlie Magri[?].
In 1981, one day before his birthday, he beat Jose De la Cruz[?] in Mar Del Plata[?]. He was already ranked number one by the WBA, and in March he flew to South Africa, where he beat Peter Mathebula[?] on the 28th day of that month, by a knockout in seven rounds to become the world's flyweight champion. After the retirement of Carlos Monzon in 1977 and Victor Galindez in 1978, (Galindez died in 1980 in a auto race accident), Argentina was in need of a world champion boxer, and Laciar became a national hero instantly.
Ibarra lost his title in his first defense to Juan Herrera[?], and after 5 more bouts, Laciar challenged Herrera in the champion's hometown of Tampico, Mexico. Laciar recovered the crown by a knockout in 13 rounds, and this time, he wouldn't lose it again. He defended it for three years, after which he left it vacant. He defeated former world champion Betulio Gonzalez[?] in Maracaibo, Venezuela by a decision in 15, Steve Muchoki[?] in Copenhagen, Denmark by a knockout in 13, Ramon Neri[?] (a deaf-mute who was the first boxer with that condition ever to challenge for a world title) by a knockout in 9 at Córdoba, Shuichi Hozumi[?] by a knockout in 2 in Japan, Hee Sup Chin[?], by a knockout in one in South Korea, Juan Herrera, in a rematch at Marsala, Italy, by a decision in 15, former world champion Prudencio Cardona[?] by a knockout in 10 in Córdoba, former two-time world Junior Flyweight champion Hilario Zapata by a decision in 15 at Buenos Aires, and Antoine Monteiro[?], beaten by a knockout in 11 at Paris, France. After his fight with Monteiro, he decided to leave the world Flyweight championship vacant. His fame also surpassed the Argentinian borders and he became famous all over Latin America, Ring Magazine's Spanish edition featuring him on the cover many times, as well as on posters and articles. He was also on the cover of Guantes[?] magazine multiple times during his second period as champion.
On June 8, 1986, he and Jaime Miranda had a rubber match, Laciar winning a ten round decision, and two months later, the Mexican world Junior Bantamweight champion, the late Gilberto Roman[?], travelled to Argentina to defend his WBC world crown versus Laciar, the fight ending in a 12 round draw. Six more wins followed, including one against Hector Patri[?], and then on May 16 of 1987, he and Roman met again. This time the WBC chose a neutral place for the fight, but Laciar won the fight by a knockout in 11 at Reims, France, becoming a world champion for the third time. However, in his first title defense, Laciar was on the losing end of a decision against Colombian[?] Sugar Baby Rojas[?] in Miami.
Laciar kept on boxing and reeled off eight more straight wins, but on October 8, 1988, he was outpointed by Juan Carazo in Caguas, Puerto Rico, by a decision in 12 rounds. Two more wins and another no contest followed, and, after Carazo lost in his title try against Roman by decision, it was Laciar's turn to face the Mexican again. This time, they boxed in the Los Angeles suburb of Inglewood[?], California, and Roman came out victorious by a 12 round decision. Roman would die in a car crash the next year, and all chances of a fourth bout between the two, which was a possibility that was being talked about, were dashed with Roman's death.
Laciar fought three more bouts, all in 1990, after which he decided to retire.
His final record was 79 wins, 10 losses, 10 draws and 2 fights ended in no-contests, with 30 wins coming by knockout.