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 María with a 12-round decision.

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 30, he challenged for the South American flyweight title.

Laciar finished the year by travelling to England, where he lost a 10-round decision to future world champion Charlie Magri.

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.

His fame also surpassed the Argentinian borders and he became famous all over Latin America, The Ring's Spanish edition featuring him on the cover many times, as well as on posters and articles.

Two months later, world Junior Bantamweight champion, Mexican Gilberto Roman, travelled to Argentina to defend his WBC and Lineal crown versus Laciar, the fight ending in a 12-round draw.

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.