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 | GORILLA JONES | 1932-01-25 |
| 2 | MARCEL THIL | 1932-06-11 |
| 3 | VINCE DUNDEE | 1933-10-30 |
| 4 | BABE RISKO | 1935-09-19 |
| 5 | FREDDIE STEELE | 1937-01-01 |
| 6 | AL HOSTAK | 1938-07-26 |
| 7 | SOLLY KRIEGER | 1938-11-01 |
| 8 | TONY ZALE | 1940-07-19 |
| 9 | ROCKY GRAZIANO | 1947-07-16 |
| 10 | MARCEL CERDAN | 1948-09-21 |
| 11 | JAKE LAMOTTA | 1949-06-16 |
| 12 | SUGAR RAY ROBINSON | 1957-05-01 |
| 13 | GENE FULLMER | 1959-12-04 |