Chantelle Cameron W10 Mikaela Mayer... In Birmingham, England, Chantelle Cameron defeated Mikaela Mayer of the United States via unanimous decision. The win made Cameron the unified junior middleweight champion, holding three of the four major belts. (The fourth title is around the waist of Oshae Jones). The official scores were 97-93 (twice) and 96-94. Cameron is now 21-1, having split two fights with the legendary Katie Taylor.