Gwan Sing boxer
- bouts
- 2
- won
- 1
- lost
- 0
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1956-06-08
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Indonesia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1956-07-20 | Mac Hurricane | WWLDW | Ikada Sporthal, Jakarta | DRAW Points |
| 1956-06-08 | Jeff Marcino | WDL | Ikada Sporthal, Jakarta | WIN Points |