UFC 12: Judgement Day from February 7, 1997. For the first time ever, the UFC divided fighters into weight classes. UFC 12 featured a heavyweight (200lb and over) and lightweight (199lb and under) tournament along with a superfight between Mark Coleman and Dan Severn. The event also marked Vitor Belfort's debut in the UFC.
![](https://d2skm2yxg2x91b.cloudfront.net/fightful-frontend-prod/2024.12.14.22.03.06/static/images/article/select-quote.png)