<P> In 1934, the Bears played a 13--0--0 regular season and became the first NFL team to complete an undefeated regular season without tied games, but lost the 1934 NFL Championship Game against the New York Giants . Despite losing several players and head coach George Halas to military service in World War II, the 1942 Bears finished 11--0--0 but again lost the NFL Championship Game, this time against the Washington Redskins . </P> <P> The 2007 Patriots became the first team after the NFL expanded its regular season to sixteen games in 1978 to finish the regular season undefeated . The Patriots then won their divisional and conference playoff games, but were upset by the New York Giants in Super Bowl XLII, giving them a final record of 18--1 . </P> <Table> <Tr> <Th> Team </Th> <Th> Wins </Th> <Th> Losses </Th> <Th> Playoff results </Th> <Th> Final result </Th> </Tr> <Tr> <Td> 1934 Chicago Bears season </Td> <Td> 13 </Td> <Td> 0 </Td> <Td> Lost NFL Championship Game against New York Giants </Td> <Td> 13--1 </Td> </Tr> <Tr> <Td> 1942 Chicago Bears season </Td> <Td> 11 </Td> <Td> 0 </Td> <Td> Lost NFL Championship Game against Washington Redskins </Td> <Td> 11--1 </Td> </Tr> <Tr> <Td> 1972 Miami Dolphins season </Td> <Td> 14 </Td> <Td> 0 </Td> <Td> Won three playoff games including Super Bowl VII </Td> <Td> 17--0 </Td> </Tr> <Tr> <Td> 2007 New England Patriots season </Td> <Td> 16 </Td> <Td> 0 </Td> <Td> Won two playoff games before losing in Super Bowl XLII against New York Giants </Td> <Td> 18--1 </Td> </Tr> </Table> <Tr> <Th> Team </Th> <Th> Wins </Th> <Th> Losses </Th> <Th> Playoff results </Th> <Th> Final result </Th> </Tr>

What was the last nfl team to go undefeated