US Panam Trials
Badger Fieldhouse, Madison, WI
April 28-30, 1959
Quarterfinals
| 1959-04-28 | 51kg | Heiji Shimabukuro | Tom Mathis | TKO 1 |
| 1959-04-28 | 51kg | Howard Smith | Bosques | 3:0 |
| 1959-04-28 | 54kg | James Quan | Fred Griffin | 2:1 |
| 1959-04-28 | 54kg | Pete Spanakos | John Cereghin | 3:0 |
| 1959-04-28 | 54kg | Norman Chambers | Olivera | 3:0 |
| 1959-04-28 | 54kg | Robert Tuelle | Ken Lockhart | 2:1 |
| 1959-04-28 | 57kg | Roy Houpe | Nick Spanakos | TKO 1 |
| 1959-04-28 | 57kg | Willie Little | Dixon | 3:0 |
| 1959-04-28 | 57kg | Grant McEwan | Thomas | TKO 1 |
| 1959-04-28 | 57kg | Charles Brown | Gonzales | 3:0 |
| 1959-04-28 | 60kg | Woody Marcus | Wallace | TKO 1 |
| 1959-04-28 | 60kg | Brian O'Shea | Carmen Scialabba | 3:0 |
| 1959-04-28 | 63,5kg | Ernest Curtis | Tom O'Shea | 3:0 |
| 1959-04-28 | 63,5kg | James Richardson | Lee Hacknay | 2:1 |
| 1959-04-28 | 63,5kg | Vincent Shomo | Leslie Norris | 3:0 |
| 1959-04-28 | 67kg | Dick Gilford | Leon Hall | 2:1 |
| 1959-04-28 | 67kg | Dean Harrison | Robert McMillan | KO 2 |
| 1959-04-28 | 71kg | Wilbert McClure | Charles Holden | 3:0 |
| 1959-04-28 | 71kg | Deloash Grant | Junaun Allman | 3:0 |
| 1959-04-28 | 75kg | Bob Foster | Jimmy McQueen | TKO 3 |
| 1959-04-28 | 75kg | James Flood | Solomon Johnson | 3:0 |
| 1959-04-28 | 75kg | Lewis Moses | Robert Conrad | TKO 2 |
| 1959-04-28 | 75kg | Bob Christopherson | Carl Miner | 3:0 |
| 1959-04-28 | 81kg | Cassius Clay | Leroy Bogar | TKO 2 |
| 1959-04-28 | 81kg | Stu Bartell | Richard Allen | 3:0 |
| 1959-04-28 | 81kg | James Jackson | Bill Johnson | 3:0 |
Semifinals
| 1959-04-29 | 51kg | Heiji Shimabukuro | Ramon Rosales | 3:0 |
| 1959-04-29 | 51kg | Howard Smith | James Jackson | 2:1 |
| 1959-04-29 | 54kg | Pete Spanakos | James Quan | TKO 2 |
| 1959-04-29 | 54kg | Norman Chambers | Robert Tuelle | 3:0 |
| 1959-04-29 | 57kg | Roy Houpe | Willie Little | 2:1 |
| 1959-04-29 | 57kg | Charles Brown | Grant McEwan | 3:0 |
| 1959-04-29 | 60kg | Harry Campbell | Woody Marcus | 2:1 |
| 1959-04-29 | 60kg | Brian O'Shea | Carl Cush | 3:0 |
| 1959-04-29 | 63,5kg | Ernest Curtis | James Richardson | 3:0 |
| 1959-04-29 | 63,5kg | Vincent Shomo | Alfred Santiago | KO 1 |
| 1959-04-29 | 67kg | Dick Gilford | Jack Werner | TKO 2 |
| 1959-04-29 | 67kg | Dean Harrison | Harold Richardson | KO 3 |
| 1959-04-29 | 71kg | Wilbert McClure | George McCorkle | TKO 2 |
| 1959-04-29 | 71kg | Terry Smith | Deloash Grant | 3:0 |
| 1959-04-29 | 75kg | Bob Foster | James Flood | WO. |
| 1959-04-29 | 75kg | Bob Christopherson | Lewis Moses | 2:1 |
| 1959-04-29 | 81kg | Cassius Clay | James Jackson | 3:0 |
| 1959-04-29 | 81kg | Amos Johnson | Stu Bartell | TKO 1 |
| 1959-04-29 | +81kg | Jimmy Jones | James Stocker | KO 1 |
| 1959-04-29 | +81kg | Allen Hudson | Roy Louson | KO 2 |
Finals
| 1959-04-30 | 51kg | Heiji Shimabukuro | Howard Smith | 3:0 |
| 1959-04-30 | 54kg | Pete Spanakos | Norman Chambers | 3:0 |
| 1959-04-30 | 57kg | Charles Brown | Roy Houpe | 2:1 |
| 1959-04-30 | 60kg | Brian O'Shea | Harry Campbell | WO. |
| 1959-04-30 | 63,5kg | Vincent Shomo | Ernest Curtis | KO 2 |
| 1959-04-30 | 67kg | Dean Harrison | Dick Gilford | 2:1 |
| 1959-04-30 | 71kg | Wilbert McClure | Terry Smith | 3:0 |
| 1959-04-30 | 75kg | Bob Foster | Bob Christopherson | TKO 2 |
| 1959-04-30 | 81kg | Amos Johnson | Cassius Clay | 2:1 |
| 1959-04-30 | +81kg | Allen Hudson | Jimmy Jones | KO 2 |