Nery had no amateur boxing contests. He debuted as a professional on June 17, 1980, beating Felix Diaz (0–3 before their bout) at
Santo Domingo, by first-round knockout. Nery build a record of 8–0, with all 8 wins by knockout (including a rematch win over Diaz, another first-round knockout on Nery's 19th birthday, on August 10, 1980) before winning by decision for the first (and only) time in his career, when the 4 wins, 4 losses Elpidio de Paula lasted ten rounds with Nery on March 27, 1981, in Santo Domingo. Nery's next bout resulted in a huge step-up in opposition class: he faced Puerto Rican
Orlando Maldonado. Maldonado had been a bronze medalist at the
1976 Summer Olympics in Montreal, Canada, and sported a 21 wins, 2 losses and 2 draws (ties) record in 25 previous fights, having boxed, among others,
International Boxing Hall of Fame member and former world Flyweight champion
Miguel Canto. Nery and Maldonado met on May 2, 1981, at Santo Domingo and Nery prevailed by an eighth-round knockout. That win began another knockout win streak for Nery, which this time reached nine knockouts in a row. These included two wins over future WBA world Junior Flyweight champion
Francisco Quiroz, whose two losses to Nery came inside a week's span; first on March 1, 1982, for the Dominican Republic's national Flyweight championship (a fight which Nery won in the third round) and then, six days later when Nery stopped him in round four of their rematch, both fights taking place in Santo Domingo. Quiroz had 6 wins and 3 losses before Nery's two contests with him. By then, Nery had built a fan-base not only in the Dominican Republic but also in
Puerto Rico-in Puerto Rico's case, not only because of the Dominican diaspora already living there during the early 1980s, but also because Nery had fans of Puerto Rican descendance as well. In Puerto Rico, Nery's contests were covered by such media outlets as
El Vocero and
El Nuevo Dia newspapers. Nery was 18–0, with 17 wins by knockout, when the WBA gave him a chance at their world Flyweight championship. On March 4, 1983, Nery had his first contest to be held abroad, when he challenged
Santos Laciar at the
Estadio Chateau Carreras in
Cordoba, Argentina. In a war, Nery and Laciar kept throwing hard, solid punches at each other until Laciar wore the challenger down and retained the championship with a brutal, ninth-round knockout.
Rest of career Nery awaited one year to return to a professional boxing ring, after which, on March 9, 1984, he faced the 4 wins, 6 losses Ernesto Sanchez at Santo Domingo. In what turned out to be Nery's last win as a professional boxer, he defeated Sanchez by a fourth-round knockout. He then traveled to
Panama, where, on July 14, 1984, he faced the former two-time
World Boxing Council world Junior Flyweight and future WBA world Flyweight champion and International Boxing Hall of Fame member, 23 wins, 4 losses
Hilario Zapata, at the Gimnasio Nuevo Panama (now
Roberto Duran Arena) in
Ciudad Panama. Nery dropped Zapata in round seven, but he lost by a relatively close but unanimous ten-rounds decision, with scores of 93–98, 94–97 and 96–97, all in favor of the Panamanian. On February 2, 1985, Nery made his debut in front of his fans in Puerto Rico, when he faced the undefeated, 13 wins and one draw, future
World Boxing Organization world Super Flyweight championship challenger, Puerto Rican
Rafael "Baby" Caban, as part of the
Victor Callejas-
Seung Hoon Lee WBA world Super Bantamweight championship fight's program held at the
Roberto Clemente Coliseum in
San Juan. Nery lost by a ten-rounds unanimous decision. Next, Nery made his United States professional boxing debut when faced, on May 10, 1985, with the future WBC world Bantamweight champion
Miguel "Happy" Lora of
Colombia, in a ten-rounds meeting held at the
Tamiami Fairgrounds Auditorium in Miami, Florida. He lost to Lora by a second-round knockout. In his last professional boxing fight, Nery fought
Johnny Carter, a boxer who had previously challenged
Jeff Chandler for the future International Boxing Hall of Fame member's WBA world Bantamweight championship during 1982. Nery-Carter was fought on March 18, 1986, at the Sands Casino Hotel in
Atlantic City, New Jersey, United States. Carter won the bout by a fifth-round technical knockout, the contest being stopped at 2 minutes and 48 seconds of that round. ==Career in review==