<Tr> <Td> Troy Tulowitzki </Td> <Td> Rockies </Td> <Td> </Td> <Td> </Td> <Td> − </Td> <Td> − </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Justin Morneau </Td> <Td> Rockies </Td> <Td> 2 (0) </Td> <Td> − </Td> <Td> − </Td> <Td> − </Td> <Td> </Td> </Tr> <Tr> <Td> Yasiel Puig </Td> <Td> Dodgers </Td> <Td> 0 </Td> <Td> − </Td> <Td> − </Td> <Td> − </Td> <Td> 0 </Td> </Tr> <P> * designates bye round . (designates swing off home runs). </P>

What are the rules of the home run derby