Nikki Adler is a Female World Super Middleweight Champion. The unbeaten 30-year-old has won all of her 16 fights.

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Nikki Adler, a Croatian fighting out of Augsburg, Bayern, Germany, recently made her U.S. debut against Claressa Shields. A former German amateur champion, Adler won the WBC crown in 2013 via unanimous decision against Zane Brige in Russia. In 2015, Adler defeated Szilvia Szabados via unanimous decision in her first defense of the WBC belt, and knocked out Elene Sikmashvili in her second defense in 2016. In March of this year, she won the vacant WIBF and GBU World Super Middleweight Championships by unanimous decision over Mery Rancier.