UFC 13: The Ultimate Force

The event was headlined by a Superfight between Vitor Belfort and Tank Abbott, continuing Belfort’s rapid rise after his breakout debut. Its lasting significance came from the professional debuts of Randy Couture and Tito Ortiz, two figures who would shape the UFC’s next decade. By running both heavyweight and lightweight tournaments, the show further reinforced the move toward structured weight classes and away from the openweight era.