<Dl> <Dd> 1. ^ Minimum 10 UFC wins . </Dd> </Dl> <Dd> 1. ^ Minimum 10 UFC wins . </Dd> <Table> <Tr> <Th> </Th> <Th> Fighter </Th> <Th> Division / s </Th> <Th> Knockouts </Th> </Tr> <Tr> <Td> 1 . </Td> <Td> Vitor Belfort </Td> <Td> Middleweight Light Heavyweight Heavyweight Catchweight </Td> <Td> 12 </Td> </Tr> <Tr> <Td> 2 . </Td> <Td> Anderson Silva </Td> <Td> Middleweight Light Heavyweight </Td> <Td> 11 </Td> </Tr> <Tr> <Td> Anthony Johnson </Td> <Td> Light Heavyweight Middleweight Welterweight </Td> </Tr> <Tr> <Td> 4 . </Td> <Td> Chuck Liddell </Td> <Td> Light Heavyweight </Td> <Td> 10 </Td> </Tr> <Tr> <Td> Michael Bisping </Td> <Td> Middleweight Light Heavyweight </Td> </Tr> <Tr> <Td> Cain Velasquez </Td> <Td> Heavyweight </Td> </Tr> </Table> <Tr> <Th> </Th> <Th> Fighter </Th> <Th> Division / s </Th> <Th> Knockouts </Th> </Tr>

Who has the most knockouts in ufc history
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