<Table> <Tr> <Td_colspan="2"> National championships in NCAA Division I FBS </Td> </Tr> <Tr> <Td> National championship trophies </Td> <Td> <Ul> <Li> AP (since 1936) </Li> <Li> Grantland Rice (1954--2013) </Li> <Li> MacArthur (since 1959) </Li> <Li> AFCA (since 1986) </Li> <Li> College Football Playoff (since 2014) </Li> </Ul> </Td> </Tr> <Tr> <Td> Longest continuous selector </Td> <Td> Associated Press (1936--present) </Td> </Tr> <Tr> <Td> First season awarded </Td> <Td> 1869 </Td> </Tr> <Tr> <Td> Last completed season </Td> <Td> 2017 </Td> </Tr> </Table> <Tr> <Td_colspan="2"> National championships in NCAA Division I FBS </Td> </Tr> <Tr> <Td> National championship trophies </Td> <Td> <Ul> <Li> AP (since 1936) </Li> <Li> Grantland Rice (1954--2013) </Li> <Li> MacArthur (since 1959) </Li> <Li> AFCA (since 1986) </Li> <Li> College Football Playoff (since 2014) </Li> </Ul> </Td> </Tr>

What is an unclaimed national title in college football