John Demsky boxer
- bouts
- 22
- won
- 12
- lost
- 7
- draw
- 3
- Status
- inactive
- Division
- featherweight
- Debut
- 1946-05-31
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1949-06-03 | Arthur McKillop | DLWWLL | Brisbane Stadium, Brisbane | LOST KO |
| 1949-01-21 | Mickey Anelzark | LWWWLW | Brisbane Stadium, Brisbane | LOST KO |
| 1948-12-04 | Danny Hirsch | WDLWWW | West Melbourne Stadium, Melbourne | LOST Points |
| 1948-10-08 | Dave Landers | LLWLLL | Brisbane Stadium, Brisbane | LOST KO |
| 1948-09-24 | Billy Watson | LWWWLL | Brisbane Stadium, Brisbane | WIN Technical knockout |
| 1948-08-13 | Arthur McKillop | WWWD | Brisbane Stadium, Brisbane | WIN Points |
| 1948-07-16 | Arthur McKillop | WWW | Brisbane Stadium, Brisbane | DRAW Points |
| 1948-04-23 | Billy Williams | WWLLWD | Brisbane Stadium, Brisbane | LOST Points |
| 1948-03-26 | Jim Scully | LLLLWL | Brisbane Stadium, Brisbane | WIN Points |
| 1948-03-12 | Billy Williams | LWWLLW | Brisbane Stadium, Brisbane | DRAW Points |
| 1948-02-27 | Jim Scully | LLLLLW | Brisbane Stadium, Brisbane | WIN |
| 1948-02-20 | Al Clauson | WLLWLW | Brisbane Stadium, Brisbane | WIN KO |
| 1947-08-29 | Al Clarke | WDWWLW | Brisbane Stadium, Brisbane | WIN Points |
| 1947-03-01 | Tommy Smith | WWWLLW | Newcastle Stadium, Newcastle | WIN Points |
| 1947-02-17 | Bill Simpson | WLWLD | Sydney Stadium, Sydney | WIN Points |
| 1946-12-13 | Jim Scully | WLWLLL | Brisbane Stadium, Brisbane | WIN Points |
| 1946-10-11 | Elley Bennett | WWWLWD | Brisbane Stadium, Brisbane | LOST Points |
| 1946-09-04 | Elley Bennett | WWWWLW | Brisbane Stadium, Brisbane | DRAW Points |
| 1946-08-28 | Jim Scully | LWLWLL | Brisbane Stadium, Brisbane | WIN Points |
| 1946-08-16 | Elley Bennett | WWWW | Brisbane Stadium, Brisbane | WIN Points |
| 1946-06-07 | Sam Parker | WWWWWL | Brisbane Stadium, Brisbane | WIN Points |
| 1946-05-31 | Charlie Innes | LWWWLW | Brisbane Stadium, Brisbane | LOST Points |