#4 Ronaldo "Jacare" Souza vs. Derek Brunson 2
Jacare had famously beaten Derek Brunson by way of KO back when the duo fought for Strikeforce.
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Fast-forward to 2018, and the fighters tangled again, this time under the UFC banner. Jacare started out with crisp hands and began tagging Brunson at will.
He then caught Brunson with perhaps one of the most technically-sound headkicks ever thrown in the sport of MMA. Jacare sent his foe reeling towards the fence and calmly unloaded with follow-up punches on him until the bout was called off.
Jacare's calm demeanor and systematic destruction turned his win over Brunson into one of the best performances and scariest KO's of 2018.