88.United States National Championships - Biloxi - April 19-22 1978
Preliminaries (incomplete)
| 1978-04-20 | 75kg | Jeff Lampkin | Jerry Otis | PTS |
| 1978-04-20 | 51kg | Jerome Coffee | Jose Vasquez | PTS |
| 1978-04-20 | 51kg | Roger Ponfil | Greg Richardson | PTS |
| 1978-04-20 | 54kg | Rocky Lockridge | Glenn Rodriguez | KO |
| 1978-04-20 | 60kg | Johnny Bumphus | Mike Hess | PTS |
| 1978-04-20 | 60kg | Anthony Fletcher | Ray Mancini | PTS |
| 1978-04-20 | 60kg | Davey Armstrong | Daniel Avery | PTS |
| 1978-04-20 | 67kg | Clinton Jackson | Michael McBride | RSC |
| 1978-04-20 | 67kg | Roger Leonard | Don Modicue | PTS |
| 1978-04-20 | 75kg | Vaughn Hooks | Jeff Lampkin | PTS |
| 1978-04-20 | 81kg | Larry Strogen | Alonzo Barnes | PTS |
| 1978-04-20 | 81kg | Tony Tucker | Jerry Bennett | PTS |
| 1978-04-20 | +81kg | Greg Page | Richard Cade | KO 2 |
| 1978-04-20 | +81kg | Steve Zouski | Clenton Cochran | RSC 3 |
Quarterfinals (incomplete)
| 1978-04-21 | 51kg | Roger Ponfil | Jerome Coffee | PTS |
| 1978-04-21 | 60kg | Davey Armstrong | Johnny Bumphus | PTS |
| 1978-04-21 | +81kg | Greg Page | Steve Zouski | WO. |
Semifinals
| 1978-04-21 | 48kg | Joe Rodriguez | Tony Wilson | PTS |
| 1978-04-21 | 48kg | James Cullins | Robert Chapman | PTS |
| 1978-04-21 | 51kg | Roger Ponfil | Sonny Long | PTS |
| 1978-04-21 | 51kg | Michael Felde | Dario Medrano | PTS |
| 1978-04-21 | 54kg | Jackie Beard | Kenny Baysmore | PTS |
| 1978-04-21 | 54kg | Rocky Lockridge | Douglas Clark | RSC 1 |
| 1978-04-21 | 57kg | Bernard Taylor | Jimmy Paul | PTS |
| 1978-04-21 | 57kg | Eiichi Jumawan | Tony Santana | PTS |
| 1978-04-21 | 60kg | Melvin Paul | Jim Hodge | PTS |
| 1978-04-21 | 60kg | Davey Armstrong | Larry Tatman | PTS |
| 1978-04-21 | 63,5kg | Don Curry | George Haynes | RSC 3 |
| 1978-04-21 | 63,5kg | Lemuel Steeples | DuJuan Johnson | PTS |
| 1978-04-21 | 67kg | Roger Leonard | John Jarvis | PTS |
| 1978-04-21 | 67kg | Clinton Jackson | Roosevelt Green | PTS |
| 1978-04-21 | 71kg | Wilford Scypion | Nathaniel Akbar | WO. |
| 1978-04-21 | 71kg | John B.Williamson | Alfred Mayes | PTS |
| 1978-04-21 | 75kg | Monte Oswald | Guy Kennedy | AB 1 |
| 1978-04-21 | 75kg | Jeff McCracken | Poncho Carter | PTS |
| 1978-04-21 | 81kg | Charles Singleton | Tony Tucker | PTS |
| 1978-04-21 | 81kg | Elmer Martin | Wade Walker | RSC 3 |
| 1978-04-21 | +81kg | Greg Page | Edward Gregg | WO. |
| 1978-04-21 | +81kg | Tony Tubbs | Woody Clark | PTS |
Finals
| 1978-04-22 | 48kg | James Cullins | Joe Rodriguez | PTS |
| 1978-04-22 | 51kg | Michael Felde | Roger Ponfil | PTS |
| 1978-04-22 | 54kg | Jackie Beard | Rocky Lockridge | PTS |
| 1978-04-22 | 57kg | Eiichi Jumawan | Bernard Taylor | PTS |
| 1978-04-22 | 60kg | Melvin Paul | Davey Armstrong | PTS |
| 1978-04-22 | 63,5kg | Don Curry | Lemuel Steeples | PTS |
| 1978-04-22 | 67kg | Roger Leonard | Clinton Jackson | PTS |
| 1978-04-22 | 71kg | John B.Williamson | Wilford Scypion | PTS |
| 1978-04-22 | 75kg | Jeff McCracken | Monte Oswald | PTS |
| 1978-04-22 | 81kg | Elmer Martin | Charles Singleton | PTS |
| 1978-04-22 | +81kg | Greg Page | Tony Tubbs | PTS |