<Tr> <Td> China </Td> <Td> - </Td> <Td> - </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Japan </Td> <Td> - </Td> <Td> </Td> <Td> - </Td> <Td> </Td> </Tr> <Tr> <Td> Jamaica </Td> <Td> - </Td> <Td> - </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Nigeria </Td> <Td> - </Td> <Td> - </Td> <Td> </Td> <Td> </Td> </Tr>

Who has the most ufc heavyweight title defenses