US Challenge - Colorado Springs - June 10-11 1999
Semi-finals
| 1999-06-10 | 48kg | Ron Siler | Karoz Norman | 3:0 |
| 1999-06-10 | 48kg | Brian Viloria | Bradley Martinez | 30:6 |
| 1999-06-10 | 51kg | John Medina | Gabriel Elizondo | 8:7 |
| 1999-06-10 | 51kg | Jose Navarro | Roberto Benitez | 17:9 |
| 1999-06-10 | 54kg | Gerald Tucker | John Franco | 10:9 |
| 1999-06-10 | 57kg | Aaron Torres | Steven Luevano | 6:4 |
| 1999-06-10 | 57kg | Ricardo Juarez | Tiger Allen | 21:8 |
| 1999-06-10 | 60kg | Jason Ingwaldson | Mark Burse | 16:9 |
| 1999-06-10 | 60kg | Mahlon Kerwick | Jacob Hudson | 11:10 |
| 1999-06-10 | 63,5kg | Ebo Elder | Larry Nicholson | 11:6 |
| 1999-06-10 | 63,5kg | Ricardo Williams | Corey Bernard | 16:2 |
| 1999-06-10 | 67kg | Arturo Morales | Joel Salas | 24:9 |
| 1999-06-10 | 67kg | Larry Mosley | LeChaunce Shepherd | 12:6 |
| 1999-06-10 | 71kg | Anthony Hanshaw | Saeed Hawkins | 12:6 |
| 1999-06-10 | 71kg | Darnell Wilson | Sergio Mora | +10:10 |
| 1999-06-10 | 75kg | Jerson Ravelo | Jeff Lacy | 11:8 |
| 1999-06-10 | 75kg | Arthur Palac | LaFarrell Bunting | 18:6 |
| 1999-06-10 | 81kg | Joe Pastorello | Luke Salayandia | 14:4 |
| 1999-06-10 | 81kg | Michael Simms | Randell Stevens | 11:1 |
| 1999-06-10 | 91kg | Michael Bennett | Jason Estrada | 10:9 |
| 1999-06-10 | 91kg | Mike Kirkman | Malik Scott | 4:3 |
Bronze Medal Winners
| 1999-06-11 | 48kg | Bradley Martinez | Karoz Norman | 25:11 |
| 1999-06-11 | 51kg | Gabriel Elizondo | Roberto Benitez | 19:15 |
| 1999-06-11 | 57kg | Steven Luevano | Tiger Allen | 16:9 |
| 1999-06-11 | 60kg | Jacob Hudson | Mark Burse | WO. |
| 1999-06-11 | 63,5kg | Corey Bernard | Larry Nicholson | WO. |
| 1999-06-11 | 67kg | LeChaunce Shepherd | Joel Salas | DQ 4 |
| 1999-06-11 | 71kg | Saeed Hawkins | Sergio Mora | 12:7 |
| 1999-06-11 | 75kg | Jeff Lacy | LaFarrell Bunting | RSC 2 |
| 1999-06-11 | 81kg | Randell Stevens | Luke Salayandia | WO. |
| 1999-06-11 | 91kg | Malik Scott | Jason Estrada | 2:1 |
Finals
| 1999-06-11 | 48kg | Brian Viloria | Ron Siler | 17:13 |
| 1999-06-11 | 51kg | John Medina | Jose Navarro | 10:8 |
| 1999-06-11 | 54kg | Clarence Vinson | Gerald Tucker | +10:10 |
| 1999-06-11 | 57kg | Ricardo Juarez | Aaron Torres | 16:5 |
| 1999-06-11 | 60kg | Mahlon Kerwick | Jason Ingwaldson | 20:13 |
| 1999-06-11 | 63,5kg | Ricardo Williams | Ebo Elder | DQ 3 |
| 1999-06-11 | 67kg | Larry Mosley | Arturo Morales | WO. |
| 1999-06-11 | 71kg | Anthony Hanshaw | Darnell Wilson | 18:10 |
| 1999-06-11 | 75kg | Jerson Ravelo | Arthur Palac | 11:8 |
| 1999-06-11 | 81kg | Michael Simms | Joe Pastorello | 11:8 |
| 1999-06-11 | 91kg | Michael Bennett | Mike Kirkman | 19:12 |
| 1999-06-11 | +91kg | Calvin Brock | Dominick Guinn | 12:3 |