John J. Cavanaugh (Jack Cavanaugh, John O.) boxer
- bouts
- 19
- won
- 11
- lost
- 3
- draw
- 5
- Status
- inactive
- Division
- heavyweight
- Debut
- 1896-04-23
- Height
- -
- Reach
- -
- Age
- 29
- Born
- 1876-00-00
- Death
- 1905-05-07
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1900-10-09 | Jim Scanlan | WWWLWW | Millvale Opera House, Millvale | LOST Technical knockout |
| 1900-05-14 | John Finnegan | WDDWLL | Cyclorama Hall, Pittsburgh | DRAW Points |
| 1900-03-02 | Charley Stevenson | LWWWLW | Industrial Hall, Philadelphia | WIN |
| 1900-02-17 | Jack Daykin | debut | Niles | DRAW Points |
| 1899-10-10 | Billy Moore | LD | American Villa, Meyers Lake | LOST |
| 1899-04-21 | Kid Lavelle | LLLL | Opera House, Homestead | WIN KO |
| 1899-01-16 | John Finnegan | WDDW | Lenox Athletic Club, Mount Oliver | WIN Points |
| 1899-01-09 | Martin Judge | DWDDDD | Oxford A.C., Philadelphia | LOST |
| 1898-10-27 | Alexander Reed | debut | Nonpareil A.C., Beaver Falls | WIN |
| 1898-05-13 | Ed Soppett | L | Belle Vernon | DRAW Points |
| 1898-05-07 | Jack Graham | LLWLDW | Turner Hall, Mount Oliver | WIN Points |
| 1898-04-08 | Ed Soppett | debut | Belle Vernon | WIN |
| 1898-03-08 | Louis Weber | debut | Allegheny A.C., Allegheny | WIN Technical knockout |
| 1898-01-01 | William O'Hara | D | Allegheny A.C., Allegheny | WIN Points |
| 1897-12-02 | John J. Craig | debut | State Fairgrounds, Johnstown | WIN KO |
| 1897-06-02 | John Maxwell | debut | Allegheny A.C., Pittsburgh | DRAW Points |
| 1897-03-08 | Black Lloyd | debut | Weber & Hummel's Gymnasium, Pittsburgh | WIN KO |
| 1897-02-25 | William O'Hara | debut | Braddock | DRAW Points |
| 1897-01-01 | Joe Simpson | debut | World's Theater, Pittsburgh | WIN Corner retirement |
| 1896-11-09 | Mike Creedon | debut | Kenyon's Hall, Allegheny | LOST Points |
| 1896-04-23 | James Clarke | debut | WIN KO |
