Jan Maas boxeador
- combates
- 30
- ganados
- 16
- perdidos
- 11
- empates
- 3
- Estado
- inactive
- División
- featherweight
- Debut
- 1949-03-09
- Altura
- -
- Alcanza
- -
- Edad
- -
- Nacimiento
- 1925-10-27
- Muerte
- -
- Nacionalidad
- Netherlands
| Fecha | Oponente | Resultados últimos oponentes | Lugar | Títulos | Resultado |
|---|---|---|---|---|---|
| 1953-11-25 | Henk Klok | WWWWWW | Apollohal, Amsterdam | Dutch Featherweight Title | LOST KO |
| 1953-10-20 | Henk Klok | WDWWWW | Apollohal, Amsterdam | Dutch Featherweight Title | LOST Points |
| 1953-10-06 | Ludwig Petri | WLLLWL | Rivièrahal, Rotterdam | Dutch Featherweight Title | LOST Points |
| 1953-06-01 | Edouard Werner | LLWDLL | Gebouw Emporium, Rotterdam | Dutch Featherweight Title | WIN KO |
| 1953-01-27 | Jean Machterlinck | LLWLLL | Charleroi | Dutch Featherweight Title | LOST Technical knockout |
| 1952-10-14 | Sammy McCarthy | WWWWWW | Streatham Ice Rink, Streatham | Dutch Featherweight Title | LOST Technical knockout |
| 1952-09-22 | Alois Meskens | debut | Rivièrahal, Rotterdam | Dutch Featherweight Title | LOST Points |
| 1952-07-26 | Hans Schoemig | LLDWWD | Sportpalast, Schoeneberg | Dutch Featherweight Title | DRAW Points |
| 1952-05-12 | Marcel Scherens | WWWDL | Rivièrahal, Rotterdam | Dutch Featherweight Title | WIN Points |
| 1952-04-01 | Eugene Servais | LDWWWL | Ahoy'-hal, Rotterdam | Dutch Featherweight Title | WIN Points |
| 1951-11-25 | Michel Dicky | LWLWLL | Veurne | Dutch Featherweight Title | DRAW Points |
| 1951-11-06 | Jan Nicolaas | WLDLWL | Concertgebouw, Amsterdam | Dutch Lightweight Title | LOST Points |
| 1951-10-22 | Lou Jacobs | WLLLDL | Rivièrahal, Rotterdam | Dutch Lightweight Title | WIN Points |
| 1951-05-17 | Pierre Gress Gyde | W | Feestgebouw Bellevue, Amsterdam | WIN Points |
|
| 1951-03-11 | Louis Cabo | LLLWDL | Denain | LOST Points |
|
| 1951-02-20 | Theo Nolten | LLLWLL | Ahoy'-hal, Rotterdam | WIN Points |
|
| 1950-11-20 | Theo Nolten | LLLLLW | Haagsche Zoo, Den Haag | Dutch Featherweight Title | WIN Points |
| 1950-09-19 | Andre Piens | WWLDW | Ahoy'-hal, Rotterdam | Dutch Featherweight Title | WIN Points |
| 1950-03-31 | Hannes Schneider | WWLLWL | Theater Carré, Amsterdam | Dutch Bantamweight Title | LOST Points |
| 1950-03-20 | Andre Piens | WWL | Rivièrahal, Rotterdam | Dutch Bantamweight Title | DRAW Points |
| 1950-01-22 | Michel Dicky | WWWW | Veurne | Dutch Bantamweight Title | LOST Points |
| 1950-01-09 | Hannes Schneider | LWWLLW | Hotel Krasnapolsky, Amsterdam | vacant Dutch Featherweight Title | WIN Points |
| 1949-12-20 | Jack Swevels | LLDLLL | Haagsche Zoo, Den Haag | vacant Dutch Featherweight Title | WIN Points |
| 1949-11-28 | Nol Klein | LLLLDL | Hotel Krasnapolsky, Amsterdam | vacant Dutch Featherweight Title | WIN KO |
| 1949-10-31 | Robert Tartari | debut | Rivièrahal, Rotterdam | vacant Dutch Featherweight Title | WIN KO |
| 1949-06-02 | Hannes Schneider | WWWDWL | Apollohal, Amsterdam | vacant Dutch Featherweight Title | LOST Points |
| 1949-05-16 | Jan Loos | debut | Rivièrahal, Rotterdam | vacant Dutch Featherweight Title | WIN Technical knockout |
| 1949-05-10 | Theo Nolten | LWLLLL | Apollohal, Amsterdam | vacant Dutch Featherweight Title | WIN Points |
| 1949-03-28 | Henk de Bruin | LLLLLL | Rivièrahal, Rotterdam | vacant Dutch Featherweight Title | WIN Points |
| 1949-03-09 | Hannes Schneider | WWWWDW | Hotel Krasnapolsky, Amsterdam | vacant Dutch Featherweight Title | WIN Points |
