Re: Sisko's favorite baseball team
In rehearsals for the Holosuite ep, Cirroc Lofton wore a Braves cap because of his uncle (Kenny Lofton, who played for the Braves at that time). So I figure Avery Brooks wore a Giants cap because of some real world connection to that team.
If Avery is a Giants fan IRL, then Sisko probably is one on the show.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.