10.United States National Championships
Broadway Athletic Club, New York
February 14-19, 1900
results incomplete
Preliminaries & Quarterfinals
| 1900-02-15 | 52,2kg | James McLaughlin | Frank Morris | PTS |
| 1900-02-15 | 52,2kg | B.J.Diamond | Fred Liebold | TKO 3 |
| 1900-02-15 | 52,2kg | George Ryan | Sam Cohen | PTS |
| 1900-02-15 | 52,2kg | M.G.Smith | R.Anderson | PTS |
| 1900-02-15 | 52,2kg | Francis Brophy | Patrick McConnell | PTS |
| 1900-02-15 | 52,2kg | D.Douglas | J.Dougherty | TKO 2 |
| 1900-02-15 | 52,2kg | Joseph Laurel | R.Keesing | PTS |
| 1900-02-15 | 52,2kg | Joseph Jones | Nick Burns | PTS |
| 1900-02-15 | 52,2kg | Hugh Murphy | Andrew Brazel | KO 2 |
| 1900-02-15 | 52,2kg | Thomas O'Connor | F.Ryan | PTS |
| 1900-02-15 | 56,7kg | M.J.McGarry | Jack Walker | PTS |
| 1900-02-15 | 56,7kg | Barden Schoonover | Albert Salmon | TKO 2 |
| 1900-02-15 | 56,7kg | Eddie Boyleston | Frank Callahan | PTS |
| 1900-02-19 | 47,6kg | S.Bruns | Robert Appel | TKO 1 |
| 1900-02-19 | 47,6kg | Harry Kinney | James Stone | PTS |
| 1900-02-19 | 47,6kg | William Cullen | Eddie Lovell | PTS |
| 1900-02-19 | 47,6kg | Thomas Killaleo | John Dempsey | PTS |
| 1900-02-19 | 52,2kg | B.J.Diamond | Walter Montgomery | PTS |
| 1900-02-19 | 52,2kg | Joseph Laurel | D.Douglas | PTS |
| 1900-02-17 | 56,7kg | Barden Schoonover | Chris Graham | PTS |
| 1900-02-17 | 56,7kg | John Scholes | George Walter | PTS |
| 1900-02-17 | 56,7kg | Eddie Boyleston | Patrick White | ??? |
| 1900-02-19 | 65,8kg | John Dukelow | John Donnelly | PTS |
| 1900-02-17 | 61,2kg | John Crane | John Parsons | PTS |
| 1900-02-17 | 61,2kg | John Mumford | Louis Smith | PTS |
| 1900-02-17 | 61,2kg | John Schwartz | M.Smith | ??? |
| 1900-02-17 | 61,2kg | John Hopkins | Andrew Driscoll | TKO 2 |
| 1900-02-17 | 61,2kg | J.J.Smith | Charles Gibbons | PTS |
| 1900-02-17 | 65,8kg | Henry Ernst | L.Scheck | PTS |
| 1900-02-17 | 71,7kg | William Rodenbach | C.Hunkele | TKO 2 |
| 1900-02-17 | 71,7kg | A.Padrucco | F.Hyde | TKO 2 |
| 1900-02-17 | 71,7kg | Charles Errickson | R.Arizoni | PTS |
| 1900-02-17 | 71,7kg | Jack Williams | John Tremmel | TKO 3 |
Semifinals
| 1900-02-19 | 47,6kg | William Cullen | Thomas Killaleo | TKO 2 |
| 1900-02-19 | 47,6kg | Harry Kinney | S.Bruns | PTS |
| 1900-02-19 | 52,2kg | Joseph Laurel | Francis Brophy | TKO 2 |
| 1900-02-19 | 52,2kg | Hugh Murphy | B.J.Diamond | TKO 3 |
| 1900-02-19 | 56,7kg | John Scholes | M.O'Brien | TKO 2 |
| 1900-02-19 | 56,7kg | Eddie Boyleston | Barden Schoonover | WO. |
| 1900-02-19 | 61,2kg | John Hopkins | John Schwartz | TKO 3 |
| 1900-02-19 | 61,2kg | John Mumford | ??? | WO. |
| 1900-02-19 | 65,8kg | Robert Summers | Henry Ernst | WO. |
| 1900-02-19 | 65,8kg | John Dukelow | John Leavy | PTS |
| 1900-02-19 | 71,7kg | Jack Williams | A.Padrucco | PTS |
| 1900-02-15 | +71,7kg | Robert Owens | Jack Nagle | TKO 1 |
| 1900-02-15 | +71,7kg | Joseph Knipe | Carl Arnold | KO 2 |
Finals
| 1900-02-19 | 47,6kg | William Cullen | Harry Kinney | PTS |
| 1900-02-19 | 52,2kg | Hugh Murphy | Joseph Laurel | PTS |
| 1900-02-19 | 56,7kg | John Scholes | Eddie Boyleston | PTS |
| 1900-02-19 | 61,2kg | John Hopkins | John Mumford | PTS |
| 1900-02-19 | 65,8kg | John Dukelow | Robert Summers | KO 2 |
| 1900-02-19 | 71,7kg | William Rodenbach | Jack Williams | PTS |
| 1900-02-19 | +71,7kg | Joseph Knipe | Robert Owens | TKO 3 |
sources: "New York Times" - February 16 & 18 & 20, 1900; "Baltimore Sun " - February 19 & 21, 1900; "Brooklyn Daily Eagle" - February 16 & 18 & 20, 1900