<Tr> <Td> </Td> <Td> Sid Gillman </Td> <Td> Houston Oilers </Td> <Td> Don Coryell </Td> <Td> St. Louis Cardinals </Td> </Tr> <Tr> <Td> 1973 </Td> <Td> John Ralston </Td> <Td> Denver Broncos </Td> <Td> Chuck Knox </Td> <Td> Los Angeles Rams </Td> </Tr> <Tr> <Td> 1972 </Td> <Td> Chuck Noll </Td> <Td> Pittsburgh Steelers </Td> <Td> Dan Devine </Td> <Td> Green Bay Packers </Td> </Tr> <Tr> <Td> 1971 </Td> <Td> Don Shula </Td> <Td> Miami Dolphins </Td> <Td> George Allen </Td> <Td> Washington Redskins </Td> </Tr>

Who got coach of the year in the nfl