United States Junior U-19 National Championships - Colorado Springs - August 21-25 1998
Preliminaries
| 1998-08-21 | 54kg | Jose Gonzales | Jacob Gonzales | 30:9 |
| 1998-08-21 | 54kg | Eric Fagan | Jose Castillo | 3:0 |
| 1998-08-21 | 54kg | Joel Martin | Erik Rodriguez | 24:10 |
| 1998-08-21 | 54kg | Cesar Olmedo | Rashan Lloyd-Purcell | 34:27 |
| 1998-08-21 | 57kg | Tiger Allen | Ricardo Juarez | 19:12 |
| 1998-08-21 | 60kg | Juan Robles | Bennie Walley | 21:10 |
| 1998-08-21 | 60kg | Marshall Martinez | Shawn Gallegos | 25:8 |
| 1998-08-21 | 60kg | Esteban Almaraz | Josue Monge | 12:6 |
| 1998-08-21 | 60kg | Rock Allen | Mahlon Kerwick | +13:13 |
| 1998-08-21 | 67kg | Miguel Espino | Erick Swanson | RSC 4 |
| 1998-08-21 | 67kg | Branden Bush | Travis Scott | AB 3 |
| 1998-08-21 | 67kg | Anthony Nolan | Anthony Jones | WO. |
| 1998-08-21 | 67kg | Johnny DeJesus | Raul Loera | 33:8 |
| 1998-08-21 | 67kg | Luis Collazo | Dylan Luther | 27:2 |
| 1998-08-21 | 67kg | Jimmy Gonzalez | Theodore Herrera | 48:9 |
| 1998-08-21 | 67kg | Joel Salas | Gilberto Reyes | +23:23 |
| 1998-08-21 | 71kg | Rudy Cisneros | Edward Johnson | 52:26 |
| 1998-08-21 | 71kg | Peter Manfredo | Luis De La Torre | 25:9 |
| 1998-08-21 | 71kg | Brandon Brookshire | Timothy Davis | 22:!5 |
| 1998-08-21 | 71kg | Daryl Woods | Joseph Rosendo | 25:9 |
| 1998-08-21 | 71kg | Roderick Privos | Michael Barrett | 22:6 |
| 1998-08-21 | 81kg | Luke Salayandia | Rydell Booker | 9:7 |
| 1998-08-21 | 81kg | Raul Pacheco | John Johnson | 15:13 |
Quarter-finals
| 1998-08-23 | 51kg | Mike Albares | Oscar Hernandez | 3:0 |
| 1998-08-23 | 51kg | Vicente Escobedo | Jose Sanchez | 18:11 |
| 1998-08-22 | 54kg | Max Deguizan | Daniel Escobedo | RSC 5 |
| 1998-08-22 | 54kg | Raymond Lopez | Michael Connally | 24:22 |
| 1998-08-22 | 54kg | Eric Fagan | Jose Gonzales | ??? |
| 1998-08-22 | 54kg | Cesar Olmedo | Joel Martin | 3:0 |
| 1998-08-23 | 57kg | Steven Luevano | Willie Dirrell | 3:0 |
| 1998-08-23 | 57kg | David Bialka | Michael Lozano | 27:18 |
| 1998-08-23 | 57kg | Miguel Ramos | David Barrios | +8:8 |
| 1998-08-23 | 57kg | Tiger Allen | Octavio DeAnda | 18:4 |
| 1998-08-22 | 60kg | Marco Arauz | Jose Navarro | 27:17 |
| 1998-08-22 | 60kg | James Helmes | Neil Wright | 39:22 |
| 1998-08-22 | 60kg | Marshall Martinez | Juan Robles | 12:3 |
| 1998-08-22 | 60kg | Rock Allen | Esteban Almaraz | 28:3 |
| 1998-08-23 | 63,5kg | Spencer Harsley | Terry Cade | 12:6 |
| 1998-08-23 | 63,5kg | German Antillon | Tyrese Hendrix | 16:11 |
| 1998-08-23 | 63,5kg | Jose Celaya | Demetrius Hopkins | 4:3 |
| 1998-08-22 | 67kg | Miguel Espino | Jacob Gonzales | 22:8 |
| 1998-08-22 | 67kg | Branden Bush | Anthony Nolan | 28:10 |
| 1998-08-22 | 67kg | Luis Collazo | Johnny DeJesus | +3:3 |
| 1998-08-22 | 67kg | Joel Salas | Jimmy Gonzalez | 49:30 |
| 1998-08-23 | 71kg | Eric Kelly | Ward Wright | 23:13 |
| 1998-08-23 | 71kg | Rudy Cisneros | Steven Turner | RSC 1 |
| 1998-08-23 | 71kg | Peter Manfredo | Brandon Brookshire | 27:7 |
| 1998-08-23 | 71kg | Daryl Woods | Roderick Privos | 9:5 |
| 1998-08-22 | 75kg | Matt Godfrey | LaFarrell Bunting | 21:4 |
| 1998-08-22 | 75kg | Arthur Palac | Olin Frazier | RSC 5 |
| 1998-08-23 | 81kg | Chris Henry | Samson Hernandez | 23:7 |
| 1998-08-23 | 81kg | Daniel Edouard | Nick Cook | 16:7 |
| 1998-08-23 | 81kg | Thomas Sonnier | Eliazer Soto | RSC 3 |
| 1998-08-23 | 81kg | Raul Pacheco | Luke Salayandia | 23:5 |
Semi-finals
| 1998-08-24 | 48kg | Ron Siler | Aaron Todd | 18:3 |
| 1998-08-24 | 48kg | Jose Navarro | Joe Vasquez | RSC 3 |
| 1998-08-24 | 51kg | Broderick Harper | Albert Cuellar | 9:3 |
| 1998-08-24 | 51kg | Mike Albares | Vicente Escobedo | 7:3 |
| 1998-08-24 | 54kg | Max Deguizan | Raymond Lopez | 5:3 |
| 1998-08-24 | 54kg | Eric Fagan | Cesar Olmedo | 11:2 |
| 1998-08-24 | 57kg | Steven Luevano | David Bialka | RSC 3 |
| 1998-08-24 | 57kg | Tiger Allen | Miguel Ramos | 13:4 |
| 1998-08-24 | 60kg | James Helmes | Marco Arauz | 10:4 |
| 1998-08-24 | 60kg | Marshall Martinez | Rock Allen | 4:3 |
| 1998-08-24 | 63,5kg | Spencer Harsley | Lamont Ingram | RSC 1 |
| 1998-08-24 | 63,5kg | Jose Celaya | German Antillon | 16:3 |
| 1998-08-24 | 67kg | Miguel Espino | Branden Bush | 16:3 |
| 1998-08-24 | 67kg | Luis Collazo | Joel Salas | 20:19 |
| 1998-08-24 | 71kg | Eric Kelly | Rudy Cisneros | 9:8 |
| 1998-08-24 | 71kg | Daryl Woods | Peter Manfredo | 6:5 |
| 1998-08-24 | 75kg | Leslie Ralston | Amos Savell | 13:1 |
| 1998-08-24 | 75kg | Arthur Palac | Matt Godfrey | 10:0 |
| 1998-08-24 | 81kg | Chris Henry | Daniel Edouard | 9:6 |
| 1998-08-24 | 81kg | Raul Pacheco | Thomas Sonnier | RSC 2 |
| 1998-08-24 | 91kg | Malik Scott | Jason Estrada | 2:1 |
| 1998-08-24 | +91kg | Mike Mollo | Ija Flapping Eagle | 12:8 |
| 1998-08-24 | +91kg | Javier Mora | Josh Hoffman | RSC 3 |
Finals
| 1998-08-25 | 48kg | Jose Navarro | Ron Siler | 13:10 |
| 1998-08-25 | 51kg | Broderick Harper | Mike Albares | 7:4 |
| 1998-08-25 | 54kg | Eric Fagan | Max Deguizan | 11:2 |
| 1998-08-25 | 57kg | Steven Luevano | Tiger Allen | 12:5 |
| 1998-08-25 | 60kg | Marshall Martinez | James Helmes | 11:4 |
| 1998-08-25 | 63,5kg | Jose Celaya | Spencer Harsley | 22:6 |
| 1998-08-25 | 67kg | Miguel Espino | Luis Collazo | 17:5 |
| 1998-08-25 | 71kg | Eric Kelly | Daryl Woods | 6:2 |
| 1998-08-25 | 75kg | Arthur Palac | Leslie Ralston | 19:4 |
| 1998-08-25 | 81kg | Chris Henry | Raul Pacheco | 13:12 |
| 1998-08-25 | 91kg | Malik Scott | Joe Abell | +6:6 |
| 1998-08-25 | +91kg | Javier Mora | Mike Mollo | WO. |