Johannes Sieben boxer
- bouts
- 31
- won
- 16
- lost
- 7
- draw
- 8
- Status
- inactive
- Division
- middleweight
- Debut
- 1948-01-16
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Germany
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1951-03-07 | Bruno Junkuhn | LDLDWW | Sartory Saele, Cologne | DRAW Points |
| 1951-01-13 | Reimund Streicher | LLLLDL | Huerth-Fischenich | WIN Points |
| 1950-12-01 | Robert Sapion | LLDLWW | Stern Saal, Siegburg | LOST Points |
| 1950-09-17 | Franz Sohn | LLWDLL | Eilenriede Stadion, Hannover | DRAW Points |
| 1950-06-17 | Hermann Vermeulen | WWLLLL | Siegburg | WIN Points |
| 1950-06-02 | Reimund Streicher | LLLDLL | Freiluftring Gotenring/Alter, Cologne | WIN Points |
| 1950-05-20 | Hans Strelecki | WWLLLW | Sportplatz Hasselholz, Aachen | LOST Points |
| 1950-01-22 | Horst Kemena | WWDDLD | Assauer Lichtspiele, Dortmund | LOST Points |
| 1949-12-05 | Hans Baumann | DWLWWW | Williamsbau, Cologne | LOST Technical knockout |
| 1949-10-08 | Paul Schirrmann | WDWDWW | Williamsbau, Cologne | LOST Points |
| 1949-10-01 | Georg Sundermann | WLLDLW | Sportplatz an der Talstrasse, Eschweiler | WIN KO |
| 1949-09-25 | Hans Strelecki | WWWDWD | Steeler Ruhrwiesen, Essen | DRAW Points |
| 1949-09-17 | Hans Krutsch | DDDLWL | Poststadion, Bonn | WIN Points |
| 1949-08-05 | Adolf Kleinbauer | WLLWDD | Eisstadion, Cologne | WIN Points |
| 1949-07-24 | Heinz Sanger | WWWWDW | Waldbuehne, Westend | DRAW Points |
| 1949-07-01 | Adolf Kleinbauer | DWWLLW | Wedau Stadion, Duisburg | DRAW Points |
| 1949-05-14 | Erich Puhlmann | LWWWLW | Eisstadion, Cologne | DRAW Points |
| 1949-03-18 | Hans Krutsch | DLWWDD | Williamsbau, Cologne | DRAW Points |
| 1949-01-15 | Franz Schmidt | LWWDDD | Ausstellungshalle | DRAW Points |
| 1948-12-04 | Hans Bernlohr | LLWWWD | Sporthalle, Munich | LOST Points |
| 1948-10-02 | Wilhelm Stiny | LDDLLL | Radrennbahn des Hurth Stadions, Hurth | WIN Technical knockout |
| 1948-09-04 | Alfred Radlewski | LDWLDL | Eisstadion, Cologne | WIN Technical knockout |
| 1948-08-07 | Georg Sundermann | LLWLLD | Eisstadion, Cologne | WIN KO |
| 1948-07-17 | Kurt Kerbusch | LDLLDD | Radrennbahn im Cologne Stadion, Cologne | WIN KO |
| 1948-06-19 | Wilhelm Stiny | LLLDDL | VFB Platz, Aachen | WIN Points |
| 1948-05-02 | Hans Motzelt | LDDLWW | Zirkus Hoppe, Mannheim | WIN KO |
| 1948-04-11 | Karl Gottmann | LDDWWD | Zirkus Hoppe, Frankfurt | WIN Technical knockout |
| 1948-03-29 | Thomas Braun | LWLLWW | Autobushalle | LOST KO |
| 1948-02-20 | Toni Vosen | LLLLLW | Zentralsporthalle, Cologne | WIN KO |
| 1948-02-15 | Georg Ehrhardt | WLWWWL | Zirkus Bügler, Essen | WIN Technical knockout |
| 1948-01-16 | Rudolf Schulmeister | LWLLLL | Zentralsporthalle, Cologne | WIN KO |