It’s been 18 years since UFC 81, when Brock Lesnar entered the UFC octagon for the first time. Lesnar’s transition from pro wrestling to MMA captivated audiences and had a massive impact on the UFC.

When the UFC signed Brock Lesnar, it did more than add a notable heavyweight to its roster. Former UFC commentator Mike Goldberg said that Lesnar’s arrival marked a major shift for the promotion.