After his loss to Dricus du Plessis last week, Kamaru Usman is considering calling it a career. Usman lost to du Plessis via unanimous decision on July 18, marking his fourth loss in his last five fights. While he's struggled in recent years, he had previously been undefeated in 15 UFC fights dating back to his debut in 2015. The loss to du Plessis led to him contemplating retirement because he felt he didn't represent his team "appropriately." Despite his recent shortcomings, Usman is one of the best welterweight fighters in UFC history.