Daniel Cormier achieved MMA history Saturday night when he defeated Stipe Miocic at UFC 226 to become the simultaneous heavyweight and light heavyweight UFC champion.

Cormier (21-1 MMA, 10-1 UFC) joined Conor McGregor as the only fighters in UFC history to hold two belts at the same time when he knocked out Miocic (18-3 MMA, 12-3 UFC) in the first round of the pay-per-view headliner, which took place at T-Mobile Arena in Las Vegas. Afterward, he had an in-cage encounter with Brock Lesnar.

Check below for the top Twitter reactions to Cormier’s victory over Miocic at UFC 226.

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For complete coverage of UFC 226, check out the UFC Events section of the site.