Gaethje "crossed the personal line," Topuria said, after remarks mocking his divorce turned the buildup from sporting trash talk into a personal grudge.
Topuria has framed the matchup as stylistically favorable and has pointed to knockout wins over Alexander Volkanovski, Max Holloway and Charles Oliveira to back his confidence.
The June 14 fight has become a heated lightweight title unification clash, with Topuria entering as a 7-to-1 favorite and promising a decisive finish on a highly symbolic stage.