<P> In the knockout stage, if a match was level at the end of 90 minutes of normal playing time, extra time was played (two periods of 15 minutes each), where each team was allowed to make a fourth substitution . If still tied after extra time, the match was decided by a penalty shoot - out to determine the winners . </P> <P> The top two placed teams from each of the eight groups qualified for the knockout stage . </P> <Table> <Tr> <Th> Group </Th> <Th> Winners </Th> <Th> Runners - up </Th> </Tr> <Tr> <Th> </Th> <Td> Uruguay </Td> <Td> Russia </Td> </Tr> <Tr> <Th> </Th> <Td> Spain </Td> <Td> Portugal </Td> </Tr> <Tr> <Th> </Th> <Td> France </Td> <Td> Denmark </Td> </Tr> <Tr> <Th> </Th> <Td> Croatia </Td> <Td> Argentina </Td> </Tr> <Tr> <Th> </Th> <Td> Brazil </Td> <Td> Switzerland </Td> </Tr> <Tr> <Th> </Th> <Td> Sweden </Td> <Td> Mexico </Td> </Tr> <Tr> <Th> </Th> <Td> Belgium </Td> <Td> England </Td> </Tr> <Tr> <Th> </Th> <Td> Colombia </Td> <Td> Japan </Td> </Tr> </Table> <Tr> <Th> Group </Th> <Th> Winners </Th> <Th> Runners - up </Th> </Tr>

Who are the final 16 teams in the world cup 2018
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