Jayson Tatum talked about guarding Giannis Antetokounmpo when the Boston Celtics face the Milwaukee Bucks on NBA Opening Night. The Celtics lost both preseason games to the Philadelphia 76ers and Brooklyn Nets while Tatum and the Boston starters struggled.br br br - #celtics #NBA #CLNSbr The CLNS Media Network is the leading provider for videoaudio content. CLNS is a fully credentialed member of the media with access to all NFLNBANHLMLB teams & venues.