

Introduction
Christina Hammer (born August 16, 1990 in Nowodolinka, Kazakh SSR) is an undefeated German boxer World Champion. She grew up in Sontra and lives and trains mainly in Magdeburg.
Career
Five times world boxing champion Christina Hammer started at the age of 15 years with the sport of boxing, she was trained by Robert Staar. At the age of 16 she was German Junior Champion and joined shortly thereafter to the professional coach Dimitri Kirnos in Dortmund into the professional business.
On 12 September 2009 she started her professional career with a fight against Melisa Koktar. In 2010 she was at 20 years of age the youngest WBO world champion against Teresa Perozzi in Riesa. After her WBO title, Hammer won the WBF title on February 18, 2011 against Diana Kiss. Hammer defended 27 May 2011 their WBO WBF title against the Swede Maria Lindberg in 10 rounds. On 26 July 2014, she won the WBO light middleweight title against Anne Sophie Mathis by disqualification, but the result later changed to No Contest. Until the end of May 2016 stood at Sport Events Steinforth in Magdeburg under contract. Currently she fights for Petkos LMS Box Promotion in Munich.
On 05.11.2016 in the fight against WBC World Champion US-American Kali Rice, she has successfully defended her WBO World Champion Title and won WBC World Champion Title in the middleweight class, clearly on points.
List of professional fights
| Year | Date | Location | Opponent/ Type | Result |
|---|---|---|---|---|
| 2009 | 12. September | Gewerbehof Schlutius, Magdeburg, Germany | Win TKO 2. Round | |
| 24. October | Anhalt Arena, Dessau, Germany | Win UD 4. Round | ||
| 15. November | EKZ Arena, Berlin, Germany | Win TKO 4. Round | ||
| 2010 | 9. April | Tivoli Arena, Ljubljana, Slovenia | Win TKO 4. Round | |
| 17. April | Bördelandhalle, Magdeburg, Germany | Win TKO 2. Round | ||
| 4. Juny | Landesgartenschau, Aschersleben, Germany | Win KO 5. Round | ||
| 4. September | Sportpark Arena, Ljubljana, Slovenia | Win TKO 2. Round | ||
| 23. October | Erdgas Arena, Riesa, Germany | Won WBO world champion title | Win UD 10 Rounds | |
| 2011 | 18. February | Sportpark Arena, Ljubljana, Slovenia | Won WBF world champion title | Win RTD 7. Round |
| 27. May | Zlatopramen Arena, Ústí nad Labem, Tschechien | Retained WBO & WBF title | Win UD 10 Rounds | |
| 21. October | Brandenburg Halle, Frankfurt (Oder), Germany | Retained WBO & WBF title | Win UD 10 Rounds | |
| 2012 | 5. April | Vodova Arena, Brünn, Tschechien | Retained WBO & WBF title | Win UD 10 Rounds |
| 7. September | RWE Rhein-Ruhr Sporthalle, Mülheim an der Ruhr, Germany | Retained WBO & WBF title | Win UD 10 Rounds | |
| 2013 | 4. May | SAP-Arena, Mannheim, Germany | Retained WBO & WBF title | Win UD 10 Rounds |
| 13. July | EnergieVerbund Arena, Dresden, Germany | Retained WBO & WBF title | Win UD 10 Rounds | |
| 6. December | Brandenburg Halle Frankfurt (Oder), Germany | Retained WBO & WBF title | Win TKO 1. Round | |
| 2014 | 1. March | GeTec-Arena Magdeburg, Germany | Retained WBO & WBF title | Win UD 10 Rounds |
| 26. July | Anhalt Arena Dessau, Germany | vacant WBO Super welterweight WBO title | No contests | |
| 2015 | 2. May | Sparkassen-Arena Jena, Germany | Retained WBO & WBF title | Win UD 10 Rounds |
| 2016 | 15. July | BallhausForum Unterschleissheim/Munich, Germany | Win TKO 6. Round | |
| 2015 | 5. November | BallhausForum Unterschleissheim/Munich, Germany | Retained WBO title, won WBC world champion title | Win UD 10 Rounds |