Johnny Mason (Johnny Mensch) boxer
- bouts
- 25
- won
- 13
- lost
- 7
- draw
- 2
- Status
- inactive
- Division
- middleweight
- Debut
- 1926-08-30
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1931-03-27 | Coleman Johns | WWDWWD | Eagles' Club, Dayton | LOST Technical knockout |
| 1931-01-12 | Jimmy Tarante | LWWWWW | Jamaica Arena, Jamaica, Queens | LOST Points |
| 1930-07-01 | Walter Palmer | LWLLWW | Fairgrounds Arena, Troy | LOST Points |
| 1930-06-16 | Roy Wallace | WWDDWL | Cadle Tabernacle, Indianapolis | LOST KO |
| 1930-01-16 | Jimmy Bean | WWLWWW | Hot Springs | WIN Corner retirement |
| 1930-01-09 | Jack Matlock | WDWLWW | Hot Springs | WIN KO |
| 1930-01-01 | Ray Hartman | WLWLWW | Memorial Hall, Dayton | WIN Points |
| 1929-10-14 | Norman Brown | DLWWWL | National Theater, Louisville | WIN |
| 1929-09-16 | Young Jack Dillon | WWLWWW | Broadway Bowl, Louisville | DRAW |
| 1929-07-17 | Joe McCarthy | LWWWWW | McCabe Arena, Dayton | DRAW |
| 1929-07-10 | Jack Elkhart | LWWLWL | Fort Benjamin Harrison, Lawrence | WIN |
| 1929-04-16 | Tiger Jack Payne | WWWWDD | South Main Street Armory, Wilkes-Barre | LOST KO |
| 1929-02-04 | Osk Till | WWWLWW | Broadway Auditorium, Buffalo | LOST Technical knockout |
| 1929-01-28 | Frankie Schoell | DWWLWW | Memorial Hall, Dayton | WIN Points |
| 1929-01-14 | Teddy Easterbrook | DLWWWW | Jolly Bowl, New Castle | DRAW Points |
| 1928-11-20 | Young Johnny Burns | DWLWDD | Armory, Indianapolis | DRAW |
| 1928-11-19 | Nick Martin | WLWDD | Tacoma Skating Rink, Dayton | WIN Technical knockout |
| 1928-10-20 | Johnny Powers | WWWWWL | Ohio National Guard Armory, Cincinnati | WIN Points |
| 1928-10-08 | Tommy Dunn | DLWWWL | Tacoma Skating Rink, Dayton | WIN KO |
| 1928-10-02 | Roy Wallace | WWWWLW | Armory, Indianapolis | LOST |
| 1928-09-24 | Billy Ryan | WWLLW | Jefferson County Armory, Louisville | DRAW |
| 1928-08-29 | Roy Wallace | WDWWWW | McCabe Arena, Dayton | WIN |
| 1928-08-22 | Young Jack Dillon | WWLWL | McCabe Arena, Dayton | WIN |
| 1928-08-08 | Joe Delaney | LWWLLW | McCabe Arena, Dayton | WIN |
| 1928-07-25 | Tiger Roy Williams | LWWWWW | American Giants Baseball Park, Chicago | LOST Points |
| 1928-07-02 | Bobby Williams | debut | Midway Gardens, Chicago | NC No Contest |
| 1928-06-11 | Haakon Hansen | DWWLWD | Midway Gardens, Chicago | WIN Points |
| 1928-04-05 | Buck Easterling | WWLWW | Kansas City | WIN |
| 1928-03-30 | One Step Watson | LWWWLL | Athletic Club, Omaha | NC No Contest |
| 1928-01-13 | Johnny Papke | LLLWDL | Kansas City | WIN Points |
| 1927-12-09 | Buzz Griffiths | WWWWWW | Omaha | DRAW Points |
| 1927-11-17 | Babe Widemeyer | debut | City Auditorium, Omaha | WIN KO |
| 1927-11-07 | Rich Matlock | LLWL | Auditorium, Omaha | WIN KO |
| 1927-09-06 | Battling Smith | debut | Auditorium, Omaha | NC No Contest |
| 1926-10-08 | Scut Kelly | WWWLLD | Watres Armory, Scranton | WIN Points |
| 1926-08-30 | Kid Numbers | WLLLWW | Town Hall, Scranton | WIN Points |