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 | WILLIE PASTRANO | 1964-11-30 |
| 2 | DICK TIGER | 1966-12-16 |
| 3 | BOB FOSTER | 1968-05-24 |
| 4 | VICENTE RONDON | 1971-02-27 |
| 5 | VICTOR EMILIO GALINDEZ | 1974-12-07 |
| 6 | MIKE ROSSMAN | 1978-09-15 |
| 7 | MARVIN JOHNSON | 1979-11-30 |
| 8 | EDDIE MUSTAFA MUHAMMAD | 1980-11-29 |
| 9 | MICHAEL SPINKS | 1981-07-18 |
| 10 | LESLIE STEWART | 1987-05-23 |
| 11 | VIRGIL HILL | 1987-09-05 |
| 12 | THOMAS HEARNS | 1991-06-03 |
| 13 | ROY JONES JR | 1998-07-18 |
| 14 | BRUNO GIRARD | 2002-05-23 |
| 15 | SILVIO BRANCO | 2003-10-10 |
| 16 | FABRICE TIOZZO | 2005-02-26 |
| 17 | HUGO HERNAN GARAY | 2008-07-03 |
| 18 | JUERGEN BRAEHMER | 2013-12-14 |
| 19 | BERNARD HOPKINS | 2014-04-19 |
| 20 | JUERGEN BRAEHMER | 2014-06-07 |