Is there a worse chin among a top 15ish fighter in MMA currently? Rockhold is the only guy who gives Vick a run for his money. Who else makes Beneil Dariush look like a savage puncher? That's another thing... Much like Rockhold - Vick doesn't just get KO'd he gets KTFO. His head is also TINY compared to the rest of his body a common trait among the worst chins in MMA and Boxing alike.