The top pound-for-pound fighter in the world, Islam Makhachev , relinquished the UFC lightweight championship in May 2025 to move up a weight class and challenge for a second UFC divisional title. In his welterweight debut at UFC 322, Makhachev dominated then-champion Jack Della Maddalena to win the 170-pound championship. Relive the Russian becoming part of the exclusive two-division UFC champions club