<Tr> <Td> 1923 Canton Bulldogs season </Td> <Td> 11 </Td> <Td> 0 </Td> <Td> </Td> <Td> - </Td> </Tr> <Tr> <Td> 1929 Green Bay Packers season </Td> <Td> 12 </Td> <Td> 0 </Td> <Td> </Td> <Td> - </Td> </Tr> <P> Apart from the 1972 Dolphins, three NFL teams have completed undefeated and untied regular seasons: the 1934 Chicago Bears, the 1942 Chicago Bears, and the 2007 New England Patriots . </P> <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>

Has there ever been an undefeated nba team