All the baseball-themed stuff in DS9 was a bit of an irritating distraction for me, probably because I'm not a big fan of the sport (unlike American football)--but it was particularly quirky for Sisko because by that time it was an all-but-dead sport as one of the eps hinted (only a few hundred spectators at the last "World Series" ever played, many years back). But I must admit that the episode where the ad hoc DS9 team played that all-Vulcan starship crew was a fun one, in that we saw all the characters operating in a completely different element, laughing at themselves as they struggle to learn the game, being good friends having good times (which of course the Vulcans never understood).
But I'm glad B5 didn't get that into it.