![Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan](https://c8.alamy.com/comp/2D0R4J3/christina-hammer-of-germany-r-punches-diana-kiss-of-hungary-at-the-wbf-world-championship-middleweight-title-fight-in-ljubljana-february-18-2011-hammer-won-kiss-by-a-technical-knockout-tko-reuterssrdjan-zivulovic-slovenia-tags-sport-boxing-2D0R4J3.jpg)
Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan
![Claressa Shields unifies middleweight titles, then calls out Savannah Marshall | Boxing | The Guardian Claressa Shields unifies middleweight titles, then calls out Savannah Marshall | Boxing | The Guardian](https://i.guim.co.uk/img/media/da95adb3edba93d2fdd7a40dc38defde3bc34be9/222_606_4235_2541/master/4235.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=46dd0cbb82f7950814221397b1c1f3ad)
Claressa Shields unifies middleweight titles, then calls out Savannah Marshall | Boxing | The Guardian
![Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan](https://c8.alamy.com/comp/2CWG724/christina-hammer-of-germany-r-punches-diana-kiss-of-hungary-at-the-wbf-world-championship-middleweight-title-fight-in-ljubljana-february-18-2011-hammer-won-kiss-by-a-technical-knockout-tko-reuterssrdjan-zivulovic-slovenia-tags-sport-boxing-2CWG724.jpg)
Christina Hammer of Germany (R) punches Diana Kiss of Hungary at the WBF World Championship Middleweight title fight in Ljubljana February 18, 2011. Hammer won Kiss by a technical knockout (TKO). REUTERS/Srdjan
![Berlin, Germany. 9th Feb, 2019. before the fight starts Christina HAMMER (GER). World Boxing Council, womans middleweight, .Christina Hammer (GER) vs Elene Sikmashvili Credit: Wolfgang Fehrmann/ZUMA Wire/Alamy Live News Stock Photo - Berlin, Germany. 9th Feb, 2019. before the fight starts Christina HAMMER (GER). World Boxing Council, womans middleweight, .Christina Hammer (GER) vs Elene Sikmashvili Credit: Wolfgang Fehrmann/ZUMA Wire/Alamy Live News Stock Photo -](https://c8.alamy.com/comp/RKENNY/berlin-germany-9th-feb-2019-before-the-fight-starts-christina-hammer-ger-world-boxing-council-womans-middleweight-christina-hammer-ger-vs-elene-sikmashvili-credit-wolfgang-fehrmannzuma-wirealamy-live-news-RKENNY.jpg)
Berlin, Germany. 9th Feb, 2019. before the fight starts Christina HAMMER (GER). World Boxing Council, womans middleweight, .Christina Hammer (GER) vs Elene Sikmashvili Credit: Wolfgang Fehrmann/ZUMA Wire/Alamy Live News Stock Photo -
![Berlin, Germany. 9th Jan, 2016. Christina HAMMER (GER), Elene SIKMASHVILI (Georgia), . World Boxing Council, womans middleweight, .Christina Hammer (GER) vs Elene Sikmashvili Credit: Wolfgang Fehrmann/ZUMA Wire/Alamy Live News Stock Photo - Berlin, Germany. 9th Jan, 2016. Christina HAMMER (GER), Elene SIKMASHVILI (Georgia), . World Boxing Council, womans middleweight, .Christina Hammer (GER) vs Elene Sikmashvili Credit: Wolfgang Fehrmann/ZUMA Wire/Alamy Live News Stock Photo -](https://c8.alamy.com/comp/RKENP1/berlin-germany-9th-jan-2016-christina-hammer-ger-elene-sikmashvili-georgia-world-boxing-council-womans-middleweight-christina-hammer-ger-vs-elene-sikmashvili-credit-wolfgang-fehrmannzuma-wirealamy-live-news-RKENP1.jpg)