<Table> <Tr> <Th_colspan="2"> ACC Men's Basketball Tournament </Th> </Tr> <Tr> <Td_colspan="2"> Conference basketball championship </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Sport </Th> <Td> Basketball </Td> </Tr> <Tr> <Th> Conference </Th> <Td> Atlantic Coast Conference </Td> </Tr> <Tr> <Th> Number of teams </Th> <Td> 15 </Td> </Tr> <Tr> <Th> Format </Th> <Td> Single - elimination tournament </Td> </Tr> <Tr> <Th> Current stadium </Th> <Td> Barclays Center </Td> </Tr> <Tr> <Th> Current location </Th> <Td> Brooklyn, New York </Td> </Tr> <Tr> <Th> Played </Th> <Td> 1954--present </Td> </Tr> <Tr> <Th> Last contest </Th> <Td> 2018 </Td> </Tr> <Tr> <Th> Current champion </Th> <Td> Virginia Cavaliers </Td> </Tr> <Tr> <Th> Most championships </Th> <Td> Duke Blue Devils (20) </Td> </Tr> <Tr> <Th> TV partner (s) </Th> <Td> ESPN, ACC Network, </Td> </Tr> <Tr> <Th> Official website </Th> <Td> TheACC.com Men's Basketball </Td> </Tr> </Table> <Tr> <Th_colspan="2"> ACC Men's Basketball Tournament </Th> </Tr>

How many teams go to the acc tournament