<Tr> <Td> CB </Td> <Td> 21 </Td> <Td> Domagoj Vida </Td> </Tr> <Tr> <Td> LB </Td> <Td> </Td> <Td> Ivan Strinić </Td> <Td> </Td> <Td> 81' </Td> </Tr> <Tr> <Td> CM </Td> <Td> 7 </Td> <Td> Ivan Rakitić </Td> </Tr> <Tr> <Td> CM </Td> <Td> 11 </Td> <Td> Marcelo Brozović </Td> </Tr>

How do the world cup semi finals work