Leo Mayo boxer
- bouts
- 22
- won
- 13
- lost
- 7
- draw
- 2
- Status
- inactive
- Division
- welterweight
- Debut
- 1937-04-30
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1947-11-21 | Leo O'Leary | WLL | City Hall, Augusta | LOST KO |
| 1946-04-22 | Young Ted Drew | LWWWWW | City Hall, Lewiston | LOST Unanimous decision |
| 1946-04-05 | Armand Michaud | LWWLWL | City Hall, Augusta | WIN KO |
| 1946-03-01 | Armand Michaud | LWWWLW | City Hall, Augusta | LOST Technical knockout |
| 1946-02-18 | Eddie Letourneau | DWWWDW | City Hall, Lewiston | WIN Majority decision |
| 1940-05-13 | Jimmy McDougal | LLWDDL | Augusta | WIN Technical knockout |
| 1940-03-29 | Joe Delgado | LLWWLL | City Hall, Lewiston | WIN Unanimous decision |
| 1940-03-08 | KO Bonnevie | LWWLWD | City Hall, Lewiston | LOST Unanimous decision |
| 1939-12-25 | Herman Boudreau | WW | City Hall, Augusta | WIN KO |
| 1939-12-11 | George Blaisdell | LDWWWW | Exposition Building, Portland | WIN Points |
| 1939-12-08 | Sailor Harry McRoberts | DLLWDW | City Hall, Augusta | DRAW Points |
| 1939-09-29 | KO Bonnevie | LLWWLW | City Hall, Augusta | DRAW Points |
| 1939-08-18 | KO Bonnevie | WLLWWL | City Hall, Augusta | LOST |
| 1939-05-12 | Jimmy McDougal | WLLWDD | Augusta | WIN Technical knockout |
| 1939-05-02 | Everett Ladd | WLDWWL | Exposition Building, Portland | WIN |
| 1939-04-21 | Jimmy McDougal | LWWLLW | Augusta | DRAW |
| 1939-03-24 | Billy Fisher | debut | City Hall, Augusta | WIN |
| 1939-03-10 | Eddie O'Tash | LLDWLW | City Hall, Augusta | WIN |
| 1939-02-24 | Everett Ladd | WWLLWW | City Hall, Augusta | WIN Technical knockout |
| 1939-01-06 | Chap Deliani | W | City Hall, Augusta | LOST |
| 1938-12-16 | Jake Desaultels | LLDDWL | City Hall, Augusta | WIN |
| 1938-12-02 | Chap Deliani | debut | City Hall, Augusta | LOST |
| 1938-10-28 | Art Small | WWWWLL | Augusta | WIN Technical knockout |
| 1938-10-13 | Art Small | LWWWWW | Waterville | WIN |
| 1938-04-29 | Roy Wheelock | WWWLLL | City Hall, Augusta | WIN |
| 1938-04-11 | Everett Ladd | WWWDWD | Exposition Building, Portland | LOST KO |
| 1938-04-07 | Tiger Gallant | W | City Hall, Augusta | WIN KO |
| 1938-04-01 | Lee Anderson | LDLLLW | City Hall, Lewiston | WIN KO |
| 1938-03-18 | Stan Siviski | LLDWDW | City Hall, Augusta | WIN |
| 1938-03-11 | Sailor Harry McRoberts | debut | City Hall, Augusta | WIN KO |
| 1938-02-04 | Stan Siviski | LLLLDW | Rumford | DRAW |
| 1938-01-20 | Coley Welch | WLWWWW | Exposition Building, Portland | LOST Technical knockout |
| 1937-12-09 | Tony Cook | LW | Rumford | WIN KO |
| 1937-09-17 | Bull Dog Roy | LWWW | City Hall, Augusta | DRAW |
| 1937-08-30 | Bull Dog Roy | LWW | Augusta | LOST KO |
| 1937-04-30 | Bull Dog Roy | LW | City Hall, Augusta | LOST |