28.United States National Championships
Mechanics Building, Boston
April 8-9, 1918
Semifinals
| 1918-04-09 | 49kg | Joe Wiles | David Kamins | PTS |
| 1918-04-09 | 49kg | Owen McManus | Peter Norton | PTS |
| 1918-04-09 | 52,2kg | James Tomasulo | James Giblin | TKO 2 |
| 1918-04-09 | 56,7kg | James Fruzzetti | Ray Rodgers | PTS |
| 1918-04-09 | 61,2kg | Thomas O'Malley | Arnold Thornberg | PTS |
| 1918-04-09 | 71,7kg | Sam Lagonia | John Newhall | TKO 1 |
| 1918-04-09 | 71,7kg | Martin Burke | Frank Grayber | PTS |
| 1918-04-09 | 79,4kg | Magloire LaBelle | James Tulley | PTS |
| 1918-04-09 | +79,4kg | P.Searle | James Tulley | WO. |
| 1918-04-09 | +79,4kg | Martin Burke | Magloire LaBelle | PTS |
Finals
| 1918-04-09 | 49kg | Joe Wiles | Owen McManus | PTS |
| 1918-04-09 | 52,2kg | James Tomasulo | William Daley | KO 1 |
| 1918-04-09 | 56,7kg | James Fruzzetti | Willie Corbett | PTS |
| 1918-04-09 | 61,2kg | Thomas O'Malley | Samuel Mosberg | PTS |
| 1918-04-09 | 65,8kg | James Sullivan | Val Grunnenwald | PTS |
| 1918-04-09 | 71,7kg | Martin Burke | Sam Lagonia | PTS |
| 1918-04-09 | 79,4kg | John McMinimen | Magloire LaBelle | KO 2 |
| 1918-04-09 | +79,4kg | Martin Burke | P.Searle | PTS |
source: "The Boston Globe" - April 10, 1918 (page 11) & "Pittsburgh Post-Gazette" - April 10, 1918 (page 12)