William Mayo boxer
- bouts
- 6
- won
- 2
- lost
- 3
- draw
- 1
- Status
- inactive
- Division
- heavyweight
- Debut
- 1893-04-24
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1902-01-29 | Walter Johnson | LLLWLL | Brand's Hall, Chicago | LOST |
| 1895-09-10 | Yank Kenny | WDLWWW | Saginaw | LOST KO |
| 1894-09-12 | Billy Hennessey | WWWDDL | Near, Traverse City | WIN KO |
| 1893-10-21 | Jack King | debut | Chicago A.C., Chicago | WIN KO |
| 1893-07-31 | Henry Baker | DLWW | Columbian A.C., Roby | LOST KO |
| 1893-04-24 | Frank Kellar | LDWDL | McGurn's Handball Court, Chicago | DRAW Points |
