<Tr> <Td> Canisius </Td> <Td> </Td> <Td> 71--73 </Td> <Td> Palestra </Td> <Td> Philadelphia </Td> <Td> Regional Semifinals </Td> </Tr> <Tr> <Td> Princeton </Td> <Td> </Td> <Td> 64--57 </Td> <Td> Palestra </Td> <Td> Philadelphia </Td> <Td> Consolation </Td> </Tr> <Tr> <Td_colspan="7"> 1951--Final 16 </Td> </Tr> <Tr> <Td> North Carolina State </Td> <Td> </Td> <Td> 62--67 </Td> <Td> </Td> <Td> </Td> <Td> Regional Semifinals </Td> </Tr>

When did villanova last win the national championship