Christina Hammer has one loss against one opponent on her boxing record. For a list of Hammer's best fights, refer to "Best fights of Christina Hammer".
On April 13, 2019 Christina Hammer, the WBO champion, met Claressa Shields, the WBA, WBC, IBF and The Ring champion, in a middleweight world-title unification fight. Hammer was 28 years old and with a record of 24-1 (11), and Shields was 24 years old and with a record of 8-0 (2). Hammer lost the fight via 10-round unanimous decision and lost her title.
