<Table> <Tr> <Th colspan="2"> Arizona Diamondbacks </Th> </Tr> <Tr> <Td colspan="2"> 2018 Arizona Diamondbacks season </Td> </Tr> <Tr> <Td colspan="2"> Established in 1998 </Td> </Tr> <Tr> <Td colspan="2"> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Team logo </Td> <Td> Cap insignia </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th colspan="2"> Major league affiliations </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> National League ( 1998 -- present ) <Ul> <Li> West Division ( 1998 -- present ) </Li> <Li> </Li> </Ul> </Li> </Ul> <P> </P> </Td> </Tr> <Tr> <Th colspan="2"> Current uniform </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Retired numbers </Th> <Td> <Ul> <Li> 20 </Li> <Li> 51 </Li> <Li> 42 </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Colors </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Sedona Red , Sonoran Sand , Black , Teal , White </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Name </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Arizona Diamondbacks ( 1998 -- present ) </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Other nicknames </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> The D - backs , The Snakes , The Rattlesnakes </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Ballpark </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Chase Field ( 1998 -- present ) <Ul> <Li> a.k.a. Bank One Ballpark ( 1998 -- 2005 ) </Li> </Ul> </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Major league titles </Th> </Tr> <Tr> <Th> World Series titles ( 1 ) </Th> <Td> 2001 </Td> </Tr> <Tr> <Th> NL Pennants ( 1 ) </Th> <Td> 2001 </Td> </Tr> <Tr> <Th> West Division titles ( 5 ) </Th> <Td> <Ul> <Li> 1999 </Li> <Li> 2001 </Li> <Li> 2002 </Li> <Li> 2007 </Li> <Li> 2011 </Li> </Ul> </Td> </Tr> <Tr> <Th> Wild card berths ( 1 ) </Th> <Td> <Ul> <Li> 2017 </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Front office </Th> </Tr> <Tr> <Th> Owner ( s ) </Th> <Td> Ken Kendrick </Td> </Tr> <Tr> <Th> Manager </Th> <Td> Torey Lovullo </Td> </Tr> <Tr> <Th> General Manager </Th> <Td> Mike Hazen </Td> </Tr> <Tr> <Th> President of Baseball Operations </Th> <Td> Mike Hazen </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="2"> Arizona Diamondbacks </Th> </Tr> <Tr> <Td colspan="2"> 2018 Arizona Diamondbacks season </Td> </Tr> <Tr> <Td colspan="2"> Established in 1998 </Td> </Tr> <Tr> <Td colspan="2"> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Team logo </Td> <Td> Cap insignia </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th colspan="2"> Major league affiliations </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> National League ( 1998 -- present ) <Ul> <Li> West Division ( 1998 -- present ) </Li> <Li> </Li> </Ul> </Li> </Ul> <P> </P> </Td> </Tr> <Tr> <Th colspan="2"> Current uniform </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Retired numbers </Th> <Td> <Ul> <Li> 20 </Li> <Li> 51 </Li> <Li> 42 </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Colors </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Sedona Red , Sonoran Sand , Black , Teal , White </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Name </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Arizona Diamondbacks ( 1998 -- present ) </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Other nicknames </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> The D - backs , The Snakes , The Rattlesnakes </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Ballpark </Th> </Tr> <Tr> <Td colspan="2"> <Ul> <Li> Chase Field ( 1998 -- present ) <Ul> <Li> a.k.a. Bank One Ballpark ( 1998 -- 2005 ) </Li> </Ul> </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Major league titles </Th> </Tr> <Tr> <Th> World Series titles ( 1 ) </Th> <Td> 2001 </Td> </Tr> <Tr> <Th> NL Pennants ( 1 ) </Th> <Td> 2001 </Td> </Tr> <Tr> <Th> West Division titles ( 5 ) </Th> <Td> <Ul> <Li> 1999 </Li> <Li> 2001 </Li> <Li> 2002 </Li> <Li> 2007 </Li> <Li> 2011 </Li> </Ul> </Td> </Tr> <Tr> <Th> Wild card berths ( 1 ) </Th> <Td> <Ul> <Li> 2017 </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Front office </Th> </Tr> <Tr> <Th> Owner ( s ) </Th> <Td> Ken Kendrick </Td> </Tr> <Tr> <Th> Manager </Th> <Td> Torey Lovullo </Td> </Tr> <Tr> <Th> General Manager </Th> <Td> Mike Hazen </Td> </Tr> <Tr> <Th> President of Baseball Operations </Th> <Td> Mike Hazen </Td> </Tr> </Table>
when did the diamondbacks become a baseball team
when did the diamondbacks become a baseball team
1998
1998