National Boxing Association (NBA), was founded in Rhode Island by 13 U.S. commissions as a result of the ecumenical boom reached by the sport. The NBA changed its name in 1962 to the World Boxing Association (WBA), which is now presided by Gilberto Jesús Mendoza.
| No. | FIGHTER | DATE |
| 1 | EDDIE PERKINS | 1962-09-14 |
| 2 | CARLOS HERNANDEZ | 1965-01-18 |
| 3 | TAKESHI FUJI | 1967-04-30 |
| 4 | NICOLINO LOCCHE | 1968-12-12 |
| 5 | NICOLINO LOCCHE | 1969-10-11 |
| 6 | ANTONIO CERVANTES | 1972-10-28 |
| 7 | WILFRED BENITEZ | 1976-03-06 |
| 8 | AARON PRYOR | 1980-08-02 |
| 9 | GENE HATCHER | 1984-06-01 |
| 10 | PATRIZIO OLIVA | 1986-03-15 |
| 11 | LORETO GARZA | 1990-08-17 |
| 12 | EDWIN ROSARIO | 1991-06-14 |
| 13 | FRANKIE RANDALL | 1994-09-17 |
| 14 | KHALID RAHILOU | 1997-07-05 |
| 15 | SHARMBA MITCHELL | 1998-10-10 |
| 16 | KOSTYA TSZYU | 2002-05-18 |
| 17 | VIVIAN HARRIS | 2003-07-12 |
| 18 | RICKY HATTON | 2005-11-26 |
| 19 | SOULEYMANE M´BAYE | 2006-09-02 |
| 20 | ANNE SOPHIE MATHIS | 2006-12-02 |
| 21 | GAVIN REES | 2007-07-21 |
| 22 | ANDRIY KOTELNIK | 2008-09-13 |