British boxers Caroline and Daniel Dubois are leading the way in sister-brother boxing titles, with their current opponents, Gabriela and Sebastian Fundora, holding five world titles. The Dubois' currently hold one, Caroline's WBC lightweight belt. She will next challenge to become a two-time world champion when she takes on WBO heavyweight title holder Fabio Wardley in Manchester next month. The Fundora siblings are each other's No. 1 fan, with Sebastian wearing a red ‘Fundora’ headband as he celebrated his sister’s sixth-round stoppage of Viviana Ruiz Corredor. In 2024, they will become the first sisters and brothers to hold world titles simultaneously.