This really isn't all that surprising. Like SSR said, it's about playing to the casual fan. There was a letter to the editor in the Sacramento Bee sports section a couple Sundays ago where the person complained about the Kings only being on national TV three times this year - with two of those being NBATV - and said that it wasn't fair. Both my editor and I got a good laugh out of it and the first thing that came out of our mouths was something to the effect of "who, outside of the Sacramento area, even cares about the Kings right now?" In the NBA's case, who is a bigger draw, Mike Bibby or Greg Oden? It's not very hard to figure out. And like has been said, Yankees-Red Sox is the biggest draw in the US as a whole so it makes sense that MLB/FOX/ESPN would want the series between those two teams to be played on the weekends.