Ezekiel "Kell" Brook is a British professional boxer. He held the IBF welterweight title from 2014 to 2017, and has challenged once for a unified middleweight title in 2016. At regional level he held the British welterweight title from 2008 to 2010. In May 2017, Brook was ranked as the world's best active welterweight by The Ring magazine. As of September 2019, he is ranked as the world’s eighth best active light middleweight by BoxRec, ninth by the Transnational Boxing Rankings Board and tenth by The Ring magazine.